diff --git a/gtk2_ardour/ardour3_ui_dark.rc.in b/gtk2_ardour/ardour3_ui_dark.rc.in
index bac7baae8c..8046d4d075 100644
--- a/gtk2_ardour/ardour3_ui_dark.rc.in
+++ b/gtk2_ardour/ardour3_ui_dark.rc.in
@@ -81,9 +81,51 @@ style "time_axis_view_item_name"
 	font_name = "%FONT_SMALLER%"
 }
 
+style "white_tree_view" 
+{
+  GtkButton::default_border = { 0, 0, 0, 0 }
+  GtkButton::default_outside_border = { 0, 0, 0, 0 }
+  GtkButton::button_relief = GTK_RELIEF_NONE
+  GtkTreeView::vertical-padding = 0
+  GtkTreeView::horizontal-padding = 0
+  GtkTreeView::even-row-color = { 0.70, 0.70, 0.70 }
+  GtkTreeView::odd-row-color = { 0.64, 0.64, 0.64 }
+  
+  fg[NORMAL] = { 0.30, 0.30, 0.40 }	
+  fg[ACTIVE] = { 0.30, 0.30, 0.40 }	
+  fg[PRELIGHT] = { 1.0, 1.0, 1.0 }
+  fg[INSENSITIVE] = { 0.30, 0.30, 0.40 }	
+  fg[SELECTED] = { 0.30, 0.30, 0.40 }	
+  
+  bg[NORMAL] = { 0.80, 0.80, 0.80 }
+  bg[ACTIVE] = { 0.80, 0.80, 0.80 }
+  bg[PRELIGHT] = { 0.80, 0.80, 0.80 }
+  bg[INSENSITIVE] = { 0.80, 0.80, 0.80 }
+  bg[SELECTED] = { 0.80, 0.80, 0.80 }
+  
+  text[NORMAL] = { 0.30, 0.30, 0.40 }
+  text[ACTIVE] = { 0.30, 0.30, 0.40 }
+  text[PRELIGHT] = { 0.30, 0.30, 0.40 }
+  text[INSENSITIVE] = { 0.30, 0.30, 0.40 }
+  text[SELECTED] = { 0, 0, 0 }
+  
+  base[ACTIVE]     = { 0.80, 0.80, 0.80 }
+  base[NORMAL]      =  { 0.80, 0.80, 0.80 }
+  base[PRELIGHT]     = { 0.90, 0.90, 0.90 }
+  base[INSENSITIVE]  = "#4c5159"
+  base[SELECTED]     = { 0.60, 0.60, 0.80 }
+
+  engine "clearlooks" 
+  {
+    menubarstyle      = 0       # 0 = flat, 1 = sunken, 2 = flat gradient
+    menuitemstyle     = 0       # 0 = flat, 1 = 3d-ish (gradient), 2 = 3d-ish (button)
+    listviewitemstyle = 0       # 0 = flat, 1 = 3d-ish (gradient)
+    progressbarstyle  = 1       # 0 = candy bar, 1 = fancy candy bar, 2 = flat
+  }
+}
+
 style "default_base" = "medium_text"
 {
-  
   GtkWidget::cursor_color =  {1.0, 1.0, 1.0 }
   GtkButton::default_border = { 0, 0, 0, 0 }
   GtkButton::default_outside_border = { 0, 0, 0, 0 }
@@ -1594,4 +1636,5 @@ widget "*RegionListWholeFile" style:highest "treeview_parent_node"
 widget "*EditorHScrollbar" style:highest "editor_hscrollbar"
 widget "*OddPortGroups" style:highest "odd_port_groups"
 widget "*EvenPortGroups" style:highest "even_port_groups"
-
+Widget "*MidiListView" style:highest "white_tree_view"
+Widget "*MidiListView*" style:highest "white_tree_view"
diff --git a/gtk2_ardour/ardour3_ui_default.conf b/gtk2_ardour/ardour3_ui_default.conf
index 222b409c3f..94a2b62830 100644
--- a/gtk2_ardour/ardour3_ui_default.conf
+++ b/gtk2_ardour/ardour3_ui_default.conf
@@ -62,7 +62,7 @@
     <Option name="midi note meter color max" value="ee3333aa"/>
     <Option name="midi note meter color mid" value="eeee33aa"/>
     <Option name="midi note meter color min" value="33ee33aa"/>    
-    <Option name="midi note selected" value="8888ffb0"/>
+    <Option name="midi note selected" value="ff0000ff"/>
     <Option name="midi note velocity text" value="000000ff"/>
     <Option name="midi program change fill" value="0000ffa0"/>
     <Option name="midi program change outline" value="a7a7d4ff"/>
diff --git a/gtk2_ardour/ardour_ui2.cc b/gtk2_ardour/ardour_ui2.cc
index 1b16c6a761..0394d8be8c 100644
--- a/gtk2_ardour/ardour_ui2.cc
+++ b/gtk2_ardour/ardour_ui2.cc
@@ -191,6 +191,7 @@ ARDOUR_UI::setup_transport ()
 {
 	transport_tearoff = manage (new TearOff (transport_tearoff_hbox));
 	transport_tearoff->set_name ("TransportBase");
+	transport_tearoff->tearoff_window().signal_key_press_event().connect (bind (sigc::ptr_fun (relay_key_press), &transport_tearoff->tearoff_window()), false);
 
 	if (Profile->get_sae()) {
 		transport_tearoff->set_can_be_torn_off (false);
diff --git a/gtk2_ardour/ardour_ui_ed.cc b/gtk2_ardour/ardour_ui_ed.cc
index dcc7a91ff1..b827625db2 100644
--- a/gtk2_ardour/ardour_ui_ed.cc
+++ b/gtk2_ardour/ardour_ui_ed.cc
@@ -39,6 +39,7 @@
 #include "editor.h"
 #include "actions.h"
 #include "mixer_ui.h"
+#include "utils.h"
 
 #ifdef GTKOSX
 #include <gtkmm2ext/sync-menu.h>
@@ -567,7 +568,6 @@ ARDOUR_UI::use_menubar_as_top_menubar ()
 #endif
 }
 
-
 void
 ARDOUR_UI::setup_clock ()
 {
@@ -580,11 +580,12 @@ ARDOUR_UI::setup_clock ()
 	big_clock_window->add  (big_clock);
 
 	WindowTitle title(Glib::get_application_name());
-	title += _("Clock");
+	title += _("Big Clock");
 	big_clock_window->set_title (title.get_string());
-	big_clock_window->set_type_hint (Gdk::WINDOW_TYPE_HINT_MENU);
+	big_clock_window->set_type_hint (Gdk::WINDOW_TYPE_HINT_UTILITY);
 	big_clock_window->signal_realize().connect (bind (sigc::ptr_fun (set_decoration), big_clock_window,  (Gdk::DECOR_BORDER|Gdk::DECOR_RESIZEH)));
 	big_clock_window->signal_unmap().connect (bind (sigc::ptr_fun(&ActionManager::uncheck_toggleaction), X_("<Actions>/Common/ToggleBigClock")));
+	big_clock_window->signal_key_press_event().connect (bind (sigc::ptr_fun (relay_key_press), big_clock_window), false);
 
 	manage_window (*big_clock_window);
 }
diff --git a/gtk2_ardour/editor.cc b/gtk2_ardour/editor.cc
index c18d70868b..34f258a348 100644
--- a/gtk2_ardour/editor.cc
+++ b/gtk2_ardour/editor.cc
@@ -1704,7 +1704,11 @@ Editor::add_region_context_items (StreamView* sv, boost::shared_ptr<Region> regi
 			bind (mem_fun(*this, &Editor::set_selected_regionview_from_map_event), sv, boost::weak_ptr<Region>(region)));
 		
 		items.push_back (MenuElem (_("Rename"), mem_fun(*this, &Editor::rename_region)));
-		items.push_back (MenuElem (_("Popup region editor"), mem_fun(*this, &Editor::edit_region)));
+		if (mr && internal_editing()) {
+			items.push_back (MenuElem (_("Popup list editor"), mem_fun(*this, &Editor::show_midi_list_editor)));
+		} else {
+			items.push_back (MenuElem (_("Popup region editor"), mem_fun(*this, &Editor::edit_region)));
+		}
 	}
 
 	items.push_back (MenuElem (_("Raise to top layer"), mem_fun(*this, &Editor::raise_region_to_top)));
@@ -2643,23 +2647,23 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
 		break;
 
 	case SnapToAThirtysecondBeat:
-		start = session->tempo_map().round_to_beat_subdivision (start, 32);
+		start = session->tempo_map().round_to_beat_subdivision (start, 32, direction);
 		break;
 
 	case SnapToASixteenthBeat:
-		start = session->tempo_map().round_to_beat_subdivision (start, 16);
+		start = session->tempo_map().round_to_beat_subdivision (start, 16, direction);
 		break;
 
 	case SnapToAEighthBeat:
-		start = session->tempo_map().round_to_beat_subdivision (start, 8);
+		start = session->tempo_map().round_to_beat_subdivision (start, 8, direction);
 		break;
 
 	case SnapToAQuarterBeat:
-		start = session->tempo_map().round_to_beat_subdivision (start, 4);
+		start = session->tempo_map().round_to_beat_subdivision (start, 4, direction);
 		break;
 
 	case SnapToAThirdBeat:
-		start = session->tempo_map().round_to_beat_subdivision (start, 3);
+		start = session->tempo_map().round_to_beat_subdivision (start, 3, direction);
 		break;
 
 	case SnapToMark:
@@ -2758,45 +2762,6 @@ Editor::snap_to_internal (nframes64_t& start, int32_t direction, bool for_mark)
 	}
 }
 
-double
-Editor::snap_length_beats (nframes64_t start)
-{
-	if (!session) {
-		return 1.0;
-	}
-
-	/* FIXME: This could/should also work with non-tempo based snap settings (ie seconds) */
-
-	switch (snap_type) {
-	case SnapToBar:
-		return session->tempo_map().meter_at(start).beats_per_bar();
-
-	case SnapToBeat:
-		return 1.0;
-
-	case SnapToAThirtysecondBeat:
-		return 1.0 / (double)32.0;
-		break;
-
-	case SnapToASixteenthBeat:
-		return 1.0 / (double)16.0;
-		break;
-
-	case SnapToAEighthBeat:
-		return 1.0 / (double)8.0;
-		break;
-
-	case SnapToAQuarterBeat:
-		return 1.0 / (double)4.0;
-		break;
-
-	case SnapToAThirdBeat:
-		return 1.0 / (double)3.0;
-
-	default:
-		return 1.0;
-	}
-}
 
 void
 Editor::setup_toolbar ()
@@ -2846,6 +2811,7 @@ Editor::setup_toolbar ()
 	
 	mouse_mode_tearoff = manage (new TearOff (*mode_box));
 	mouse_mode_tearoff->set_name ("MouseModeBase");
+	mouse_mode_tearoff->tearoff_window().signal_key_press_event().connect (bind (sigc::ptr_fun (relay_key_press), &mouse_mode_tearoff->tearoff_window()), false);
 
 	if (Profile->get_sae()) {
 		mouse_mode_tearoff->set_can_be_torn_off (false);
@@ -2985,6 +2951,7 @@ Editor::setup_toolbar ()
 
 	tools_tearoff = manage (new TearOff (*hbox));
 	tools_tearoff->set_name ("MouseModeBase");
+	tools_tearoff->tearoff_window().signal_key_press_event().connect (bind (sigc::ptr_fun (relay_key_press), &tools_tearoff->tearoff_window()), false);
 
 	if (Profile->get_sae()) {
 		tools_tearoff->set_can_be_torn_off (false);
@@ -3846,6 +3813,60 @@ Editor::playlist_selector () const
 	return *_playlist_selector;
 }
 
+Evoral::MusicalTime
+Editor::get_grid_type_as_beats (bool& success, nframes64_t position)
+{
+	success = true;
+
+	switch (snap_type) {
+	case SnapToBeat:
+		return 1.0;
+		break;
+
+	case SnapToAThirtysecondBeat:
+		return 1.0/32.0;		
+		break;
+
+	case SnapToASixteenthBeat:
+		return 1.0/16.0;
+		break;
+
+	case SnapToAEighthBeat:
+		return 1.0/8.0;
+		break;
+
+	case SnapToAQuarterBeat:
+		return 1.0/4.0;
+		break;
+
+	case SnapToAThirdBeat:
+		return 1.0/3.0;
+		break;
+		
+	case SnapToBar:
+		if (session) {
+			return session->tempo_map().meter_at (position).beats_per_bar();
+		}
+		break;
+
+	case SnapToCDFrame:
+	case SnapToSMPTEFrame:
+	case SnapToSMPTESeconds:
+	case SnapToSMPTEMinutes:
+	case SnapToSeconds:
+	case SnapToMinutes:
+	case SnapToRegionStart:
+	case SnapToRegionEnd:
+	case SnapToRegionSync:
+	case SnapToRegionBoundary:
+	default:
+		success = false;
+		break;
+	}
+
+	return 0.0;
+}
+
 nframes64_t
 Editor::get_nudge_distance (nframes64_t pos, nframes64_t& next)
 {
diff --git a/gtk2_ardour/editor.h b/gtk2_ardour/editor.h
index 5f5147a677..66e6f2c5f8 100644
--- a/gtk2_ardour/editor.h
+++ b/gtk2_ardour/editor.h
@@ -82,6 +82,7 @@ namespace ARDOUR {
 	class Filter;
 	class Crossfade;
 	class ChanCount;
+	class MidiOperator;
 }
 
 namespace LADSPA {
@@ -102,6 +103,7 @@ class Drag;
 class GlobalPortMatrixWindow;
 class GroupedButtons;
 class Marker;
+class MidiRegionView;
 class MixerStrip;
 class PlaylistSelector;
 class PluginSelector;
@@ -333,6 +335,7 @@ class Editor : public PublicEditor
 	/* nudge is initiated by transport controls owned by ARDOUR_UI */
 
 	nframes64_t get_nudge_distance (nframes64_t pos, nframes64_t& next);
+	Evoral::MusicalTime get_grid_type_as_beats (bool& success, nframes64_t position);
 
 	void nudge_forward (bool next, bool force_playhead);
 	void nudge_backward (bool next, bool force_playhead);
@@ -1060,6 +1063,7 @@ class Editor : public PublicEditor
 	void remove_selected_regions ();
 	void remove_clicked_region ();
 	void edit_region ();
+	void show_midi_list_editor ();
 	void rename_region ();
 	void duplicate_some_regions (RegionSelection&, float times);
 	void duplicate_selection (float times);
@@ -1493,8 +1497,6 @@ public:
 	void snap_to_with_modifier (nframes64_t& first, GdkEvent const *, int32_t direction = 0, bool for_mark = false);
 	void snap_to (nframes64_t& first, nframes64_t& last, int32_t direction = 0, bool for_mark = false);
 
-	double snap_length_beats (nframes64_t start);
-
 	uint32_t bbt_beat_subdivision;
 
 	/* toolbar */
@@ -1915,6 +1917,9 @@ public:
 
 	void apply_filter (ARDOUR::Filter&, std::string cmd);
 
+	void apply_midi_note_edit_op_to_region (ARDOUR::MidiOperator& op, MidiRegionView& mrv);
+	void apply_midi_note_edit_op (ARDOUR::MidiOperator& op);
+
 	/* handling cleanup */
 
 	int playlist_deletion_dialog (boost::shared_ptr<ARDOUR::Playlist>);
diff --git a/gtk2_ardour/editor_ops.cc b/gtk2_ardour/editor_ops.cc
index d9491a21b0..feeae881f0 100644
--- a/gtk2_ardour/editor_ops.cc
+++ b/gtk2_ardour/editor_ops.cc
@@ -79,6 +79,7 @@
 #include "strip_silence_dialog.h"
 #include "editor_routes.h"
 #include "editor_regions.h"
+#include "quantize_dialog.h"
 
 #include "i18n.h"
 
@@ -2535,6 +2536,13 @@ Editor::edit_region ()
 	selection->foreach_regionview (&RegionView::show_region_editor);
 }
 
+/** Show the midi list editor for the selected MIDI regions */
+void
+Editor::show_midi_list_editor ()
+{
+	selection->foreach_midi_regionview (&MidiRegionView::show_list_editor);
+}
+
 void
 Editor::rename_region()
 {
@@ -4801,6 +4809,48 @@ Editor::strip_region_silence ()
 	}
 }
 
+void
+Editor::apply_midi_note_edit_op_to_region (MidiOperator& op, MidiRegionView& mrv)
+{
+	vector<Evoral::Sequence<Evoral::MusicalTime>::Notes> v;
+	Evoral::Sequence<Evoral::MusicalTime>::Notes selected;
+	
+	v.push_back (selected);
+
+	mrv.selection_as_notelist (v.front());
+	op (v);
+	mrv.replace_selected (v.front());
+}
+				      
+void
+Editor::apply_midi_note_edit_op (MidiOperator& op)
+{
+	RegionSelection rs; 
+
+	get_regions_for_action (rs);
+
+	if (rs.empty()) {
+		return;
+	}
+
+	begin_reversible_command (op.name ());
+
+	for (RegionSelection::iterator r = rs.begin(); r != rs.end(); ) {
+		RegionSelection::iterator tmp = r;
+		++tmp;
+
+		MidiRegionView* const mrv = dynamic_cast<MidiRegionView*> (*r);
+
+		if (mrv) {
+			apply_midi_note_edit_op_to_region (op, *mrv);
+		}
+		
+		r = tmp;
+	}
+
+	commit_reversible_command ();
+	rs.clear ();
+}
 
 void
 Editor::quantize_region ()
@@ -4809,9 +4859,18 @@ Editor::quantize_region ()
 		return;
 	}
 
-	// FIXME: varying meter?
-	Quantize quant (*session, snap_length_beats(0));
-	apply_filter (quant, _("quantize regions"));
+	QuantizeDialog* qd = new QuantizeDialog (*this);
+
+	qd->present ();
+	qd->run ();
+	qd->hide ();
+	
+	Quantize quant (*session, Plain, 
+			qd->snap_start(), qd->snap_end(),
+			qd->start_grid_size(), qd->end_grid_size(),
+			qd->strength(), qd->swing(), qd->threshold());
+
+	apply_midi_note_edit_op (quant);
 }
 
 void
@@ -4834,13 +4893,6 @@ Editor::apply_filter (Filter& filter, string command)
 		RegionSelection::iterator tmp = r;
 		++tmp;
 
-		MidiRegionView* const mrv = dynamic_cast<MidiRegionView*>(*r);
-		if (mrv) {
-			if (mrv->midi_region()->apply(filter) == 0) {
-				mrv->redisplay_model();
-			}
-		}
-
 		AudioRegionView* const arv = dynamic_cast<AudioRegionView*>(*r);
 		if (arv) {
 			boost::shared_ptr<Playlist> playlist = arv->region()->playlist();
diff --git a/gtk2_ardour/keyboard.cc b/gtk2_ardour/keyboard.cc
index f3542054aa..157cfffd01 100644
--- a/gtk2_ardour/keyboard.cc
+++ b/gtk2_ardour/keyboard.cc
@@ -237,6 +237,7 @@ Keyboard::snooper (GtkWidget *widget, GdkEventKey *event)
 				const AccelKey& ak (k->first);
 				
 				if (keyval == ak.get_key() && (Gdk::ModifierType)(event->state | Gdk::RELEASE_MASK) == ak.get_mod()) {
+					cerr << "Suppress auto repeat\n";
 					ret = true;
 					break;
 				}
@@ -261,6 +262,7 @@ Keyboard::snooper (GtkWidget *widget, GdkEventKey *event)
 				Glib::RefPtr<Gtk::Action> act = ActionManager::get_action (ts.first.c_str(), ts.second.c_str());
 				if (act) {
 					act->activate();
+					cerr << "use repeat, suppress other\n";
 					ret = true;
 				}
 				break;
diff --git a/gtk2_ardour/midi_list_editor.cc b/gtk2_ardour/midi_list_editor.cc
new file mode 100644
index 0000000000..2db6cbd25e
--- /dev/null
+++ b/gtk2_ardour/midi_list_editor.cc
@@ -0,0 +1,99 @@
+/* 
+   Copyright (C) 2009 Paul Davis
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#include "evoral/midi_util.h"
+#include "ardour/midi_region.h"
+
+#include "midi_list_editor.h"
+
+#include "i18n.h"
+
+using namespace std;
+using namespace Gtk;
+using namespace Glib;
+using namespace ARDOUR;
+
+MidiListEditor::MidiListEditor (boost::shared_ptr<MidiRegion> r)
+	: ArdourDialog (r->name(), false, false)
+	, region (r)
+{
+	model = ListStore::create (columns);
+	view.set_model (model);
+
+	view.append_column (_("Channel"), columns.channel);
+	view.append_column (_("Note"), columns.note);
+	view.append_column (_("Name"), columns.note_name);
+	view.append_column (_("Velocity"), columns.velocity);
+	view.append_column (_("Start"), columns.start);
+	view.append_column (_("End"), columns.end);
+	view.append_column (_("Length"), columns.length);
+	view.set_headers_visible (true);
+	view.set_name (X_("MidiListView"));
+	view.set_rules_hint (true);
+
+	for (int i = 0; i < 6; ++i) {
+		CellRendererText* renderer = dynamic_cast<CellRendererText*>(view.get_column_cell_renderer (i));
+		renderer->property_editable() = true;
+		renderer->signal_edited().connect (mem_fun (*this, &MidiListEditor::edited));
+	}
+	
+	scroller.add (view);
+	scroller.set_policy (POLICY_NEVER, POLICY_AUTOMATIC);
+
+	redisplay_model ();
+
+	view.show ();
+	scroller.show ();
+
+	get_vbox()->pack_start (scroller);
+	set_size_request (400, 400);
+}
+
+MidiListEditor::~MidiListEditor ()
+{
+}
+
+void
+MidiListEditor::edited (const Glib::ustring& /* path */, const Glib::ustring& /* text */)
+{
+	redisplay_model ();
+}
+
+void
+MidiListEditor::redisplay_model ()
+{
+	view.set_model (Glib::RefPtr<Gtk::ListStore>(0));
+	model->clear ();
+
+	MidiModel::Notes notes = region->midi_source(0)->model()->notes();
+	TreeModel::Row row;
+
+	for (MidiModel::Notes::iterator i = notes.begin(); i != notes.end(); ++i) {
+		row = *(model->append());
+		row[columns.channel] = (*i)->channel();
+		row[columns.note_name] = Evoral::midi_note_name ((*i)->note());
+		row[columns.note] = (*i)->note();
+		row[columns.velocity] = (*i)->velocity();
+		row[columns.start] = (*i)->time();
+		row[columns.length] = (*i)->length();
+		row[columns.end] = (*i)->end_time();
+	}
+
+	view.set_model (model);
+}	
diff --git a/gtk2_ardour/midi_list_editor.h b/gtk2_ardour/midi_list_editor.h
new file mode 100644
index 0000000000..ac931dcca6
--- /dev/null
+++ b/gtk2_ardour/midi_list_editor.h
@@ -0,0 +1,73 @@
+/* 
+   Copyright (C) 2009 Paul Davis
+
+	This program is free software; you can redistribute it and/or modify
+	it under the terms of the GNU General Public License as published by
+	the Free Software Foundation; either version 2 of the License, or
+	(at your option) any later version.
+
+	This program is distributed in the hope that it will be useful,
+	but WITHOUT ANY WARRANTY; without even the implied warranty of
+	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+	GNU General Public License for more details.
+
+	You should have received a copy of the GNU General Public License
+	along with this program; if not, write to the Free Software
+	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __ardour_gtk2_midi_list_editor_h_
+#define __ardour_gtk2_midi_list_editor_h_
+
+#include <gtkmm/treeview.h>
+#include <gtkmm/liststore.h>
+#include <gtkmm/scrolledwindow.h>
+
+#include "evoral/types.hpp"
+
+#include "ardour_dialog.h"
+
+namespace ARDOUR {
+	class MidiRegion;
+	class MidiModel;
+};
+
+class MidiListEditor : public ArdourDialog
+{
+  public:
+	MidiListEditor(boost::shared_ptr<ARDOUR::MidiRegion>);
+	~MidiListEditor();
+
+  private:
+	struct MidiListModelColumns : public Gtk::TreeModel::ColumnRecord {
+		MidiListModelColumns() { 
+			add (channel);
+			add (note);
+			add (note_name);
+			add (velocity);
+			add (start);
+			add (length);
+			add (end);
+		};
+		Gtk::TreeModelColumn<uint8_t> channel;
+		Gtk::TreeModelColumn<uint8_t> note;
+		Gtk::TreeModelColumn<std::string> note_name;
+		Gtk::TreeModelColumn<uint8_t> velocity;
+		Gtk::TreeModelColumn<Evoral::MusicalTime> start;
+		Gtk::TreeModelColumn<Evoral::MusicalTime> length;
+		Gtk::TreeModelColumn<Evoral::MusicalTime> end;
+	};
+	
+	MidiListModelColumns         columns;
+	Glib::RefPtr<Gtk::ListStore> model;
+	Gtk::TreeView                view;
+	Gtk::ScrolledWindow          scroller;
+
+	boost::shared_ptr<ARDOUR::MidiRegion> region;
+
+	void edited (const Glib::ustring&, const Glib::ustring&);
+	void redisplay_model ();
+};
+
+#endif /* __ardour_gtk2_midi_list_editor_h_ */
diff --git a/gtk2_ardour/midi_region_view.cc b/gtk2_ardour/midi_region_view.cc
index 4efaa2eed2..95b1ffad93 100644
--- a/gtk2_ardour/midi_region_view.cc
+++ b/gtk2_ardour/midi_region_view.cc
@@ -50,6 +50,7 @@
 #include "gui_thread.h"
 #include "keyboard.h"
 #include "midi_cut_buffer.h"
+#include "midi_list_editor.h"
 #include "midi_region_view.h"
 #include "midi_streamview.h"
 #include "midi_time_axis.h"
@@ -160,9 +161,7 @@ MidiRegionView::init (Gdk::Color const & basic_color, bool wfd)
 		midi_region()->midi_source(0)->load_model();
 	}
 
-	cerr << "Looking up model for midi region\n";
 	_model = midi_region()->midi_source(0)->model();
-	cerr << " model = " << _model << endl;
 	_enable_display = false;
 
 	RegionView::init (basic_color, false);
@@ -236,53 +235,84 @@ MidiRegionView::canvas_event(GdkEvent* ev)
 		break;
 
 	case GDK_KEY_PRESS:
-		if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
+
+		/* since GTK bindings are generally activated on press, and since
+		   detectable auto-repeat is the name of the game and only sends
+		   repeated presses, carry out key actions at key press, not release.
+		*/
+
+		if (ev->key.keyval == GDK_Alt_L || ev->key.keyval == GDK_Alt_R){
 			_mouse_state = SelectTouchDragging;
 			return true;
+
 		} else if (ev->key.keyval == GDK_Escape) {
 			clear_selection();
 			_mouse_state = None;
-		}
-		return false;
 
-	case GDK_KEY_RELEASE:
-		if (ev->key.keyval == GDK_Delete) {
+		} else if (ev->key.keyval == GDK_comma || ev->key.keyval == GDK_period) {
+
+			bool start = (ev->key.keyval == GDK_comma);
+			bool end = (ev->key.keyval == GDK_period);
+			bool shorter = Keyboard::modifier_state_contains (ev->key.state, Keyboard::PrimaryModifier);
+			bool fine = Keyboard::modifier_state_contains (ev->key.state, Keyboard::SecondaryModifier);
+			
+			change_note_lengths (fine, shorter, start, end);
+
+			return true;
+
+		} else if (ev->key.keyval == GDK_Delete) {
+
 			delete_selection();
 			apply_command();
 			return true;
-		} else if (ev->key.keyval == GDK_Shift_L || ev->key.keyval == GDK_Control_L) {
-			_mouse_state = None;
-			return true;
+
 		} else if (ev->key.keyval == GDK_Tab) {
+
 			if (Keyboard::modifier_state_equals (ev->key.state, Keyboard::PrimaryModifier)) {
 				goto_previous_note ();
 			} else {
 				goto_next_note ();
 			}
 			return true;
+
 		} else if (ev->key.keyval == GDK_Up) {
 
 			if (Keyboard::modifier_state_equals (ev->key.state, Keyboard::PrimaryModifier)) {
 				change_velocities (1, true);
 			} else {
-				transpose (true, false);
+				transpose (true, Keyboard::modifier_state_equals (ev->key.state, Keyboard::SecondaryModifier));
 			}
+			return true;
 
 		} else if (ev->key.keyval == GDK_Down) {
-
+			
 			if (Keyboard::modifier_state_equals (ev->key.state, Keyboard::PrimaryModifier)) {
 				change_velocities (-1, true);
 			} else {
-				transpose (false, false);
+				transpose (false, Keyboard::modifier_state_equals (ev->key.state, Keyboard::SecondaryModifier));
 			}
-		} else if (ev->key.keyval == GDK_Left) {
+			return true;
 
+		} else if (ev->key.keyval == GDK_Left) {
+			
 			nudge_notes (false);
+			return true;
 
 		} else if (ev->key.keyval == GDK_Right) {
 
 			nudge_notes (true);
+			return true;
 
+		} else if (ev->key.keyval == GDK_Control_L) {
+			return true;
+		}
+
+		return false;
+
+	case GDK_KEY_RELEASE:
+		if (ev->key.keyval == GDK_Alt_L || ev->key.keyval == GDK_Alt_R) {
+			_mouse_state = None;
+			return true;
 		}
 		return false;
 
@@ -416,7 +446,9 @@ MidiRegionView::canvas_event(GdkEvent* ev)
 		group->ungrab(ev->button.time);
 		event_frame = trackview.editor().pixel_to_frame(event_x);
 
-		if (_pressed_button != 1) {
+		if (ev->button.button == 3) {
+			return false;
+		} else if (_pressed_button != 1) {
 			return false;
 		}
 			
@@ -429,7 +461,9 @@ MidiRegionView::canvas_event(GdkEvent* ev)
 				break;
 			case MouseObject:
 				create_note_at(event_x, event_y, _default_note_length);
-			default: break;
+				break;
+			default: 
+				break;
 			}
 			_mouse_state = None;
 			break;
@@ -459,6 +493,12 @@ MidiRegionView::canvas_event(GdkEvent* ev)
 	return false;
 }
 
+void
+MidiRegionView::show_list_editor ()
+{
+	MidiListEditor* mle = new MidiListEditor (midi_region());
+	mle->show ();
+}
 
 /** Add a note to the model, and the view, at a canvas (click) coordinate.
  * \param x horizontal position in pixels
@@ -578,7 +618,26 @@ MidiRegionView::apply_command()
 	_marked_for_selection.clear();
 	_marked_for_velocity.clear();
 }
+
+void
+MidiRegionView::apply_command_as_subcommand()
+{
+	if (!_delta_command) {
+		return;
+	}
+
+	// Mark all selected notes for selection when model reloads
+	for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
+		_marked_for_selection.insert((*i)->note());
+	}
 	
+	_model->apply_command_as_subcommand(trackview.session(), _delta_command);
+	_delta_command = NULL; 
+	midi_view()->midi_track()->diskstream()->playlist_modified();
+
+	_marked_for_selection.clear();
+	_marked_for_velocity.clear();
+}
 
 void
 MidiRegionView::abort_command()
@@ -673,7 +732,7 @@ void
 MidiRegionView::display_sysexes()
 {
 	for (MidiModel::SysExes::const_iterator i = _model->sysexes().begin(); i != _model->sysexes().end(); ++i) {
-		ARDOUR::MidiModel::TimeType time = (*i)->time();
+		Evoral::MusicalTime time = (*i)->time();
 		assert(time >= 0);
 		
 		ostringstream str;
@@ -1033,8 +1092,12 @@ MidiRegionView::add_note(const boost::shared_ptr<NoteType> note)
 
 	if (event) {
 		if (_marked_for_selection.find(note) != _marked_for_selection.end()) {
+			cerr << "Added note " << *note << " was marked for selection\n";
 			note_selected(event, true);
+		} else {
+			cerr << "Added note " << *note << " not selected\n";
 		}
+
 		if (_marked_for_velocity.find(note) != _marked_for_velocity.end()) {
 			event->show_velocity();
 		}
@@ -1190,9 +1253,7 @@ MidiRegionView::delete_selection()
 		return;
 	}
 
-	if (!_delta_command) {
-		_delta_command = _model->new_delta_command("delete selection");
-	}
+	start_delta_command (_("delete selection"));
 
 	for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 		if ((*i)->selected()) {
@@ -1201,6 +1262,8 @@ MidiRegionView::delete_selection()
 	}
 
 	_selection.clear();
+
+	apply_command ();
 }
 
 void
@@ -1252,8 +1315,8 @@ MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool
 	} else {
 		/* find end of latest note selected, select all between that and the start of "ev" */
 
-		MidiModel::TimeType earliest = DBL_MAX;
-		MidiModel::TimeType latest = 0;
+		Evoral::MusicalTime earliest = DBL_MAX;
+		Evoral::MusicalTime latest = 0;
 
 		for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 			if ((*i)->note()->end_time() > latest) {
@@ -1265,18 +1328,24 @@ MidiRegionView::note_selected(ArdourCanvas::CanvasNoteEvent* ev, bool add, bool
 		}
 
 		if (ev->note()->end_time() > latest) {
-			earliest = latest;
 			latest = ev->note()->end_time();
-		} else {
+		}
+
+		if (ev->note()->time() < earliest) {
 			earliest = ev->note()->time();
 		}
 
+
 		for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {		
-			if ((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) {
-				add_to_selection (*i);
-			}
 			
-			if ((*i)->note()->end_time() > latest) {
+			/* find notes entirely within OR spanning the earliest..latest range */
+
+			if (((*i)->note()->time() >= earliest && (*i)->note()->end_time() <= latest) ||
+			    ((*i)->note()->time() <= earliest && (*i)->note()->end_time() >= latest)) {
+				add_to_selection (*i);
+			} 			
+
+			if ((*i)->note()->time() > latest) {
 				break;
 			}
 		}
@@ -1431,13 +1500,32 @@ MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
 		const boost::shared_ptr<NoteType> copy(new NoteType(*(*i)->note().get()));
 
 		nframes64_t start_frames = beats_to_frames((*i)->note()->time());
+
+		cerr << "starting at " << (*i)->note()->time() 
+		     << " (" << start_frames << ") delta on drag = " << dt << endl;
+
 		if (dt >= 0) {
+			cerr << "Motion was " << snap_frame_to_frame(trackview.editor().pixel_to_frame(dt)) << endl;
 			start_frames += snap_frame_to_frame(trackview.editor().pixel_to_frame(dt));
 		} else {
+			cerr << "rev Motion was " << snap_frame_to_frame(trackview.editor().pixel_to_frame(dt)) << endl;
 			start_frames -= snap_frame_to_frame(trackview.editor().pixel_to_frame(-dt));
 		}
 
-		copy->set_time(frames_to_beats(start_frames));
+		cerr << "start frame will be " << start_frames << " vs. region " 
+		     << _region->position ()
+		     << endl;
+
+		Evoral::MusicalTime new_time = frames_to_beats(start_frames);
+
+		if (new_time < 0) {
+			i = next;
+			continue;
+		}
+
+		copy->set_time (new_time);
+
+		cerr << "copy time = " << copy->time() << endl;
 
 		uint8_t original_pitch = (*i)->note()->note();
 		uint8_t new_pitch      = original_pitch + dnote - highest_note_difference;
@@ -1457,6 +1545,7 @@ MidiRegionView::note_dropped(CanvasNoteEvent* ev, double dt, uint8_t dnote)
 		copy->set_note(new_pitch);
 		
 		command_remove_note(*i);
+		cerr << "Adding note: " << *copy << endl;
 		command_add_note(copy, (*i)->selected());
 
 		i = next;
@@ -1671,7 +1760,63 @@ MidiRegionView::change_note_note (CanvasNoteEvent* event, int8_t note, bool rela
 }
 
 void
-MidiRegionView::change_note_time (CanvasNoteEvent* event, MidiModel::TimeType delta, bool relative)
+MidiRegionView::trim_note (CanvasNoteEvent* event, Evoral::MusicalTime front_delta, Evoral::MusicalTime end_delta)
+{
+	/* NOTE: the semantics of the two delta arguments are slightly subtle:
+
+	   front_delta: if positive - move the start of the note later in time (shortening it)
+	                if negative - move the start of the note earlier in time (lengthening it)
+
+	   end_delta:   if positive - move the end of the note later in time (lengthening it)
+	                if negative - move the end of the note earlier in time (shortening it)
+	 */
+
+	const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
+
+	cerr << "Trim front by " << front_delta << " end by " << end_delta << endl;
+
+	if (front_delta) {
+		if (front_delta < 0) {
+			if (copy->time() < -front_delta) {
+				copy->set_time (0);
+			} else {
+				copy->set_time (copy->time() + front_delta); // moves earlier
+			}
+			/* start moved toward zero, so move the end point out to where it used to be.
+			   Note that front_delta is negative, so this increases the length.
+			 */
+			copy->set_length (copy->length() - front_delta); 
+		} else {
+			Evoral::MusicalTime new_pos = copy->time() + front_delta;
+
+			if (new_pos >= copy->end_time()) {
+				return;
+			}
+
+			copy->set_time (copy->time() + front_delta);
+
+			/* start moved toward the end, so move the end point back to where it used to be */
+			copy->set_length (copy->length() - front_delta); 
+		}
+
+	}
+
+	if (end_delta) {
+		if (end_delta < 0) {
+			if (copy->length() < -end_delta) {
+				return;
+			}
+		}
+		
+		copy->set_length (copy->length() + end_delta);
+	}
+
+	command_remove_note(event);
+	command_add_note(copy, event->selected(), false);
+}
+
+void
+MidiRegionView::change_note_time (CanvasNoteEvent* event, Evoral::MusicalTime delta, bool relative)
 {
 	const boost::shared_ptr<NoteType> copy(new NoteType(*(event->note().get())));
 
@@ -1744,6 +1889,44 @@ MidiRegionView::transpose (bool up, bool fine)
 	apply_command ();
 }
 
+void
+MidiRegionView::change_note_lengths (bool fine, bool shorter, bool start, bool end)
+{
+	Evoral::MusicalTime delta;
+
+	if (fine) {
+		delta = 1.0/128.0;
+	} else {
+		/* grab the current grid distance */
+		bool success;
+		delta = trackview.editor().get_grid_type_as_beats (success, _region->position());
+		if (!success) {
+			/* XXX cannot get grid type as beats ... should always be possible ... FIX ME */
+			cerr << "Grid type not available as beats - TO BE FIXED\n";
+			return;
+		}
+	}
+
+	if (shorter) {
+		delta = -delta;
+	}
+
+	start_delta_command (_("change note lengths"));
+
+	for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
+		Selection::iterator next = i;
+		++next;
+		
+		/* note the negation of the delta for start */
+
+		trim_note (*i, (start ? -delta : 0), (end ? delta : 0));
+		i = next;
+	}
+
+	apply_command ();
+
+}
+
 void
 MidiRegionView::nudge_notes (bool forward)
 {
@@ -1757,23 +1940,36 @@ MidiRegionView::nudge_notes (bool forward)
 	*/
 
 	nframes64_t ref_point = _region->position() + beats_to_frames ((*(_selection.begin()))->note()->time());
-	nframes64_t next_pos = ref_point;
+	nframes64_t unused;
+	nframes64_t distance;
 
-	if (forward) {
-		next_pos += 1;
-	} else { 
-		if (next_pos == 0) {
-			return;
+	if ((distance = trackview.editor().get_nudge_distance (ref_point, unused)) == 0) {
+
+		/* no nudge distance set - use grid */
+
+		nframes64_t next_pos = ref_point;
+		
+		if (forward) {
+			/* XXX need check on max_frames, but that needs max_frames64 or something */
+			next_pos += 1;
+		} else { 
+			if (next_pos == 0) {
+				return;
+			}
+			next_pos -= 1;
 		}
-		next_pos -= 1;
+		
+		cerr << "ref point was " << ref_point << " next was " << next_pos;
+		trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
+		distance = ref_point - next_pos;
+		cerr << " final is " << next_pos << " distance = " << distance << endl;
+	} 
+		
+	if (distance == 0) {
+		return;
 	}
 
-	trackview.editor().snap_to (next_pos, (forward ? 1 : -1), false);
-	nframes64_t distance = ref_point - next_pos;
-
-	cerr << "ref was " << ref_point << " next is " << next_pos << endl;
-
-	MidiModel::TimeType delta = frames_to_beats (fabs (distance));
+	Evoral::MusicalTime delta = frames_to_beats (fabs (distance));
 
 	if (!forward) {
 		delta = -delta;
@@ -1911,7 +2107,7 @@ MidiRegionView::cut_copy_clear (Editing::CutCopyOp op)
 MidiCutBuffer*
 MidiRegionView::selection_as_cut_buffer () const
 {
-	Evoral::Sequence<MidiModel::TimeType>::Notes notes;
+	NoteList notes;
 
 	for (Selection::iterator i = _selection.begin(); i != _selection.end(); ++i) {
 		notes.push_back (boost::shared_ptr<NoteType> (new NoteType (*((*i)->note().get()))));
@@ -1919,7 +2115,8 @@ MidiRegionView::selection_as_cut_buffer () const
 
 	/* sort them into time order */
 
-	sort (notes.begin(), notes.end(), Evoral::Sequence<MidiModel::TimeType>::note_time_comparator);
+	Evoral::Sequence<Evoral::MusicalTime>::LaterNoteComparator cmp;
+	sort (notes.begin(), notes.end(),  cmp);
 
 	MidiCutBuffer* cb = new MidiCutBuffer (trackview.session());
 	cb->set (notes);
@@ -1936,10 +2133,10 @@ MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
 
 	start_delta_command (_("paste"));
 
-	MidiModel::TimeType beat_delta;
-	MidiModel::TimeType paste_pos_beats;
-	MidiModel::TimeType duration;
-	MidiModel::TimeType end_point;
+	Evoral::MusicalTime beat_delta;
+	Evoral::MusicalTime paste_pos_beats;
+	Evoral::MusicalTime duration;
+	Evoral::MusicalTime end_point;
 
 	duration = mcb.notes().back()->end_time() - mcb.notes().front()->time();
 	paste_pos_beats = frames_to_beats (pos - _region->position());
@@ -1950,7 +2147,7 @@ MidiRegionView::paste (nframes64_t pos, float times, const MidiCutBuffer& mcb)
 
 	for (int n = 0; n < (int) times; ++n) {
 
-		for (Evoral::Sequence<MidiModel::TimeType>::Notes::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
+		for (NoteList::const_iterator i = mcb.notes().begin(); i != mcb.notes().end(); ++i) {
 			
 			boost::shared_ptr<NoteType> copied_note (new NoteType (*((*i).get())));
 			copied_note->set_time (paste_pos_beats + copied_note->time() - beat_delta);
@@ -2033,3 +2230,66 @@ MidiRegionView::goto_previous_note ()
 
 	unique_select (*(_events.rbegin()));
 }
+
+MidiModel::DeltaCommand*
+MidiRegionView::apply (Filter& filter, const std::string& name)
+{
+	MidiModel::Notes before = _model->notes();
+	MidiModel::Notes after;
+
+	_region->apply (filter);
+	
+	redisplay_model ();
+
+	after = _model->notes();
+	
+	start_delta_command (name);
+
+	for (MidiModel::Notes::iterator i = before.begin(); i != before.end(); ++i) {
+		_delta_command->add (*i);
+	}
+
+	for (MidiModel::Notes::iterator i = after.begin(); i != after.end(); ++i) {
+		_delta_command->remove (*i);
+	}
+
+	return _delta_command;
+}
+
+void
+MidiRegionView::selection_as_notelist (NoteList& selected) 
+{
+	for (Events::iterator i = _events.begin(); i != _events.end(); ++i) {
+		if ((*i)->selected()) {
+			/* make a copy of the original */
+			selected.push_back (boost::shared_ptr<Evoral::Note<Evoral::MusicalTime> >
+					    (new Evoral::Note<Evoral::MusicalTime> (*((*i)->note()))));
+		}
+	}
+}
+
+void
+MidiRegionView::replace_selected (NoteList& replacements)
+{
+	start_delta_command ("whatever");
+
+	for (Selection::iterator i = _selection.begin(); i != _selection.end(); ) {
+		Selection::iterator tmp;
+		tmp = i;
+		++tmp;
+
+		command_remove_note (*i);
+		remove_from_selection (*i);
+
+		i = tmp;
+	}
+
+	_selection.clear ();
+
+	for (NoteList::iterator i = replacements.begin(); i != replacements.end(); ++i) {
+		command_add_note (*i, true, false);
+	}
+	
+	apply_command_as_subcommand ();
+}
+
diff --git a/gtk2_ardour/midi_region_view.h b/gtk2_ardour/midi_region_view.h
index 073b78ad1a..7edc4cd835 100644
--- a/gtk2_ardour/midi_region_view.h
+++ b/gtk2_ardour/midi_region_view.h
@@ -45,6 +45,7 @@
 namespace ARDOUR {
 	class MidiRegion;
 	class MidiModel;
+	class Filter;
 };
 
 namespace MIDI {
@@ -62,7 +63,8 @@ class MidiCutBuffer;
 class MidiRegionView : public RegionView
 {
   public:
-	typedef Evoral::Note<ARDOUR::MidiModel::TimeType> NoteType;
+	typedef Evoral::Note<Evoral::MusicalTime> NoteType;
+	typedef Evoral::Sequence<Evoral::MusicalTime>::Notes NoteList;
 
 	MidiRegionView (ArdourCanvas::Group *,
 	                RouteTimeAxisView&,
@@ -86,6 +88,8 @@ class MidiRegionView : public RegionView
 	inline MidiStreamView* midi_stream_view() const
 		{ return midi_view()->midi_view(); }
 
+	ARDOUR::MidiModel::DeltaCommand* apply (ARDOUR::Filter&, const std::string& name);
+
 	void set_height (double);
 	void apply_note_range(uint8_t lowest, uint8_t highest, bool force=false);
 
@@ -168,6 +172,7 @@ class MidiRegionView : public RegionView
 	void command_remove_note(ArdourCanvas::CanvasNoteEvent* ev);
 
 	void apply_command();
+	void apply_command_as_subcommand();
 	void abort_command();
 
 	void   note_entered(ArdourCanvas::CanvasNoteEvent* ev);
@@ -264,9 +269,15 @@ class MidiRegionView : public RegionView
 	void goto_previous_note ();
 	void goto_next_note ();
 	void change_velocities (int8_t velocity, bool relative);
+	void change_note_lengths (bool, bool, bool start, bool end);
 	void transpose (bool up, bool fine);
 	void nudge_notes (bool forward);
 
+	void show_list_editor ();
+
+	void selection_as_notelist (NoteList& selected);
+	void replace_selected (NoteList& replacements);
+
   protected:
 	/** Allows derived types to specify their visibility requirements
 	 * to the TimeAxisViewItem parent class.
@@ -308,6 +319,8 @@ class MidiRegionView : public RegionView
 	void change_note_velocity(ArdourCanvas::CanvasNoteEvent* ev, int8_t vel, bool relative=false);
 	void change_note_note(ArdourCanvas::CanvasNoteEvent* ev, int8_t note, bool relative=false);
 	void change_note_time(ArdourCanvas::CanvasNoteEvent* ev, ARDOUR::MidiModel::TimeType, bool relative=false);
+	void trim_note(ArdourCanvas::CanvasNoteEvent* ev, ARDOUR::MidiModel::TimeType start_delta,
+		       ARDOUR::MidiModel::TimeType end_delta);
 
 	void clear_selection_except(ArdourCanvas::CanvasNoteEvent* ev);
 	void clear_selection() { clear_selection_except(NULL); }
@@ -361,6 +374,7 @@ class MidiRegionView : public RegionView
 
 	/* connection used to connect to model's ContentChanged signal */
 	sigc::connection content_connection;
+
 };
 
 #endif /* __gtk_ardour_midi_region_view_h__ */
diff --git a/gtk2_ardour/plugin_ui.cc b/gtk2_ardour/plugin_ui.cc
index 1c5a56f531..86dbcd829b 100644
--- a/gtk2_ardour/plugin_ui.cc
+++ b/gtk2_ardour/plugin_ui.cc
@@ -331,11 +331,7 @@ PluginUIWindow::create_lv2_editor(boost::shared_ptr<PluginInsert> insert)
 bool
 PluginUIWindow::on_key_press_event (GdkEventKey* event)
 {
-	if (!key_press_focus_accelerator_handler (*this, event)) {
-		return PublicEditor::instance().on_key_press_event(event);
-	} else {
-		return true;
-	}
+	return relay_key_press (event, this);
 }
 
 bool
diff --git a/gtk2_ardour/public_editor.h b/gtk2_ardour/public_editor.h
index f2d57a72a2..ee7f303884 100644
--- a/gtk2_ardour/public_editor.h
+++ b/gtk2_ardour/public_editor.h
@@ -31,6 +31,7 @@
 #include <jack/types.h>
 #include <sigc++/signal.h>
 
+#include "evoral/types.hpp"
 #include "ardour/route_group.h"
 
 #include "pbd/statefuldestructible.h" 
@@ -121,9 +122,6 @@ class PublicEditor : public Gtk::Window, public PBD::StatefulThingWithGoingAway
 	/** Snap a value according to the current snap setting. */
 	virtual void snap_to (nframes64_t& first, int32_t direction = 0, bool for_mark = false) = 0;
 	
-	/** Get the current snap value in beats */
-	virtual double snap_length_beats (nframes64_t start) = 0;
-
 	/** Undo some transactions.
 	 * @param n Number of transactions to undo.
 	 */
@@ -264,7 +262,7 @@ class PublicEditor : public Gtk::Window, public PBD::StatefulThingWithGoingAway
 	virtual void foreach_time_axis_view (sigc::slot<void,TimeAxisView&>) = 0;
 	virtual void add_to_idle_resize (TimeAxisView*, int32_t) = 0;
 	virtual nframes64_t get_nudge_distance (nframes64_t pos, nframes64_t& next) = 0;
-
+	virtual Evoral::MusicalTime get_grid_type_as_beats (bool& success, nframes64_t position) = 0;
 
 #ifdef WITH_CMT
 	virtual void add_imageframe_time_axis(const std::string & track_name, void*)  = 0;
@@ -350,7 +348,7 @@ class PublicEditor : public Gtk::Window, public PBD::StatefulThingWithGoingAway
 
 	static PublicEditor* _instance;
 
-	friend class PluginUIWindow;
+	friend bool relay_key_press (GdkEventKey*, Gtk::Window*);
 };
 
 #endif // __gtk_ardour_public_editor_h__
diff --git a/gtk2_ardour/selection.h b/gtk2_ardour/selection.h
index 288c832178..a898705d23 100644
--- a/gtk2_ardour/selection.h
+++ b/gtk2_ardour/selection.h
@@ -181,6 +181,7 @@ class Selection : public sigc::trackable
 
 	void foreach_region (void (ARDOUR::Region::*method)(void));
 	void foreach_regionview (void (RegionView::*method)(void));
+	void foreach_midi_regionview (void (MidiRegionView::*method)(void));
 	template<class A> void foreach_region (void (ARDOUR::Region::*method)(A), A arg);
 
   private:
diff --git a/gtk2_ardour/selection_templates.h b/gtk2_ardour/selection_templates.h
index cc7933d879..cc2585c17e 100644
--- a/gtk2_ardour/selection_templates.h
+++ b/gtk2_ardour/selection_templates.h
@@ -29,6 +29,7 @@
 
 #include "selection.h"
 #include "region_view.h"
+#include "midi_region_view.h"
 
 inline void
 Selection::foreach_region (void (ARDOUR::Region::*method)(void)) {
@@ -45,6 +46,16 @@ Selection::foreach_regionview (void (RegionView::*method)(void)) {
 	}
 }
 
+inline void
+Selection::foreach_midi_regionview (void (MidiRegionView::*method)(void)) {
+	for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
+		MidiRegionView* mrv = dynamic_cast<MidiRegionView*>(*i);
+		if (mrv) {
+			(mrv->*(method))();
+		}
+	}
+}
+
 template<class A> inline void 
 Selection::foreach_region (void (ARDOUR::Region::*method)(A), A arg) {
 	for (RegionSelection::iterator i = regions.begin(); i != regions.end(); ++i) {
diff --git a/gtk2_ardour/utils.cc b/gtk2_ardour/utils.cc
index 7a1c9c6968..5e5534222e 100644
--- a/gtk2_ardour/utils.cc
+++ b/gtk2_ardour/utils.cc
@@ -41,6 +41,7 @@
 #include "ardour/filesystem_paths.h"
 
 #include "ardour_ui.h"
+#include "public_editor.h"
 #include "keyboard.h"
 #include "utils.h"
 #include "i18n.h"
@@ -508,6 +509,16 @@ extern "C" {
 }
 #endif
 
+bool
+relay_key_press (GdkEventKey* ev, Gtk::Window* win)
+{
+	if (!key_press_focus_accelerator_handler (*win, ev)) {
+		return PublicEditor::instance().on_key_press_event(ev);
+	} else {
+		return true;
+	}
+}
+
 bool
 key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev)
 {
diff --git a/gtk2_ardour/utils.h b/gtk2_ardour/utils.h
index 4cf54f6c91..5e0c3b53c2 100644
--- a/gtk2_ardour/utils.h
+++ b/gtk2_ardour/utils.h
@@ -82,6 +82,7 @@ bool canvas_item_visible (ArdourCanvas::Item* item);
 
 void set_color (Gdk::Color&, int);
 
+bool relay_key_press (GdkEventKey* ev, Gtk::Window* win);
 bool key_press_focus_accelerator_handler (Gtk::Window& window, GdkEventKey* ev);
 bool possibly_translate_keyval_to_make_legal_accelerator (uint32_t& keyval);
 
diff --git a/gtk2_ardour/wscript b/gtk2_ardour/wscript
index 87503ff2d3..17d9096dc9 100644
--- a/gtk2_ardour/wscript
+++ b/gtk2_ardour/wscript
@@ -127,6 +127,7 @@ gtk2_ardour_sources = [
 	'marker.cc',
 	'midi_channel_selector.cc',
 	'midi_cut_buffer.cc',
+	'midi_list_editor.cc',
 	'midi_port_dialog.cc',
 	'midi_region_view.cc',
 	'midi_scroomer.cc',
@@ -157,6 +158,7 @@ gtk2_ardour_sources = [
 	'processor_box.cc',
 	'prompter.cc',
 	'public_editor.cc',
+	'quantize_dialog.cc',
 	'rc_option_editor.cc',
 	'region_gain_line.cc',
 	'region_selection.cc',
diff --git a/libs/ardour/ardour/midi_model.h b/libs/ardour/ardour/midi_model.h
index 3feda1a22c..967372fa9a 100644
--- a/libs/ardour/ardour/midi_model.h
+++ b/libs/ardour/ardour/midi_model.h
@@ -47,7 +47,7 @@ class MidiSource;
  * Because of this MIDI controllers and automatable controllers/widgets/etc
  * are easily interchangeable.
  */
-class MidiModel : public AutomatableSequence<double> {
+class MidiModel : public AutomatableSequence<Evoral::MusicalTime> {
 public:
 	typedef double TimeType;
 
@@ -91,6 +91,7 @@ public:
 
 	MidiModel::DeltaCommand* new_delta_command(const std::string name="midi edit");
 	void                     apply_command(Session& session, Command* cmd);
+	void                     apply_command_as_subcommand(Session& session, Command* cmd);
 
 	bool write_to(boost::shared_ptr<MidiSource> source);
 		
diff --git a/libs/ardour/ardour/midi_operator.h b/libs/ardour/ardour/midi_operator.h
new file mode 100644
index 0000000000..e3ed6aabfd
--- /dev/null
+++ b/libs/ardour/ardour/midi_operator.h
@@ -0,0 +1,42 @@
+/*
+    Copyright (C) 2009 Paul Davis 
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+
+*/
+
+#ifndef __libardour_midi_operator_h__
+#define __libardour_midi_operator_h__
+
+#include <vector>
+#include <string>
+
+#include "evoral/types.hpp"
+#include "evoral/Sequence.hpp"
+
+namespace ARDOUR {
+
+class MidiOperator {
+  public:
+	MidiOperator() {}
+	virtual ~MidiOperator() {}
+	
+	virtual int operator() (std::vector<Evoral::Sequence<Evoral::MusicalTime>::Notes>&) = 0;
+	virtual std::string name() const = 0;
+};
+
+} /* namespace */
+
+#endif /* __libardour_midi_operator_h__ */
diff --git a/libs/ardour/ardour/midi_source.h b/libs/ardour/ardour/midi_source.h
index cf49e59458..a479b4a8a8 100644
--- a/libs/ardour/ardour/midi_source.h
+++ b/libs/ardour/ardour/midi_source.h
@@ -65,7 +65,7 @@ class MidiSource : virtual public Source
 			sframes_t source_start,
 			nframes_t cnt);
 
-	virtual void append_event_unlocked_beats(const Evoral::Event<double>& ev) = 0;
+	virtual void append_event_unlocked_beats(const Evoral::Event<Evoral::MusicalTime>& ev) = 0;
 
 	virtual void append_event_unlocked_frames(const Evoral::Event<nframes_t>& ev,
 			sframes_t source_start) = 0;
@@ -128,7 +128,7 @@ class MidiSource : virtual public Source
 	boost::shared_ptr<MidiModel> _model;
 	bool                         _writing;
 	
-	mutable Evoral::Sequence<double>::const_iterator _model_iter;
+	mutable Evoral::Sequence<Evoral::MusicalTime>::const_iterator _model_iter;
 	
 	mutable double    _length_beats;
 	mutable sframes_t _last_read_end;
diff --git a/libs/ardour/ardour/midi_track.h b/libs/ardour/ardour/midi_track.h
index e7ffd40d67..5c5ef5c26c 100644
--- a/libs/ardour/ardour/midi_track.h
+++ b/libs/ardour/ardour/midi_track.h
@@ -84,7 +84,8 @@ protected:
 	int _set_state (const XMLNode&, bool call_base);
 
 private:
-	void write_controller_messages(MidiBuffer& buf, sframes_t start_frame, sframes_t end_frame, nframes_t nframes);
+	void write_out_of_band_data (BufferSet& bufs, sframes_t start_frame, sframes_t end_frame,
+				     nframes_t nframes);
 
 	int set_diskstream (boost::shared_ptr<MidiDiskstream> ds);
 	void use_new_diskstream ();
diff --git a/libs/ardour/ardour/quantize.h b/libs/ardour/ardour/quantize.h
index f7307c194c..57e5467294 100644
--- a/libs/ardour/ardour/quantize.h
+++ b/libs/ardour/ardour/quantize.h
@@ -1,5 +1,5 @@
 /*
-    Copyright (C) 2007 Paul Davis 
+    Copyright (C) 2007-2009 Paul Davis 
 	Author: Dave Robillard
 
     This program is free software; you can redistribute it and/or modify
@@ -21,19 +21,33 @@
 #ifndef __ardour_quantize_h__
 #define __ardour_quantize_h__
 
-#include "ardour/filter.h"
+#include "ardour/types.h"
+#include "ardour/midi_operator.h"
 
 namespace ARDOUR {
 
-class Quantize : public Filter {
-public:
-	Quantize (ARDOUR::Session&, double q);
-	~Quantize ();
+class Session;
 
-	int run (boost::shared_ptr<ARDOUR::Region>);
+class Quantize : public MidiOperator {
+public:
+	 Quantize (ARDOUR::Session&, QuantizeType type, 
+		   bool snap_start, bool snap_end,
+		   double start_grid, double end_grid, 
+		   float strength, float swing, float threshold);
+	 ~Quantize ();
+
+	 int operator() (std::vector<Evoral::Sequence<Evoral::MusicalTime>::Notes>&);
+	 std::string name() const { return std::string ("quantize"); }
 
 private:
-	double _q;
+	 ARDOUR::Session& session;
+	 bool   _snap_start;
+	 bool   _snap_end;
+	 double _start_grid;
+	 double _end_grid;
+	 float  _strength;
+	 float  _swing;
+	 float  _threshold;
 };
 
 } /* namespace */
diff --git a/libs/ardour/ardour/route.h b/libs/ardour/ardour/route.h
index 9195a50060..34bf9e8d9f 100644
--- a/libs/ardour/ardour/route.h
+++ b/libs/ardour/ardour/route.h
@@ -326,6 +326,9 @@ class Route : public SessionObject, public AutomatableControls
 	void passthru (sframes_t start_frame, sframes_t end_frame,
 		       nframes_t nframes, int declick);
 
+	virtual void write_out_of_band_data (BufferSet& /* bufs */, sframes_t /* start_frame */, sframes_t /* end_frame */,
+					     nframes_t /* nframes */) {}
+
 	virtual void process_output_buffers (BufferSet& bufs,
 					     sframes_t start_frame, sframes_t end_frame,
 					     nframes_t nframes, bool with_processors, int declick);
diff --git a/libs/ardour/ardour/smf_source.h b/libs/ardour/ardour/smf_source.h
index dc9cbeee55..73bef5480a 100644
--- a/libs/ardour/ardour/smf_source.h
+++ b/libs/ardour/ardour/smf_source.h
@@ -51,7 +51,7 @@ public:
 
 	bool set_name (const std::string& newname) { return (set_source_name(newname, false) == 0); }
 	
-	void append_event_unlocked_beats (const Evoral::Event<double>& ev);
+	void append_event_unlocked_beats (const Evoral::Event<Evoral::MusicalTime>& ev);
 	void append_event_unlocked_frames (const Evoral::Event<nframes_t>& ev, sframes_t source_start);
 
 	void mark_streaming_midi_write_started (NoteMode mode, sframes_t start_time);
diff --git a/libs/ardour/ardour/tempo.h b/libs/ardour/ardour/tempo.h
index fcda463fe1..843437dab7 100644
--- a/libs/ardour/ardour/tempo.h
+++ b/libs/ardour/ardour/tempo.h
@@ -204,7 +204,7 @@ class TempoMap : public PBD::StatefulDestructible
 
 	nframes_t round_to_bar  (nframes_t frame, int dir);
 	nframes_t round_to_beat (nframes_t frame, int dir);
-	nframes_t round_to_beat_subdivision (nframes_t fr, int sub_num);
+	nframes_t round_to_beat_subdivision (nframes_t fr, int sub_num, int dir);
 	nframes_t round_to_tick (nframes_t frame, int dir);
 
 	void set_length (nframes_t frames);
diff --git a/libs/ardour/ardour/types.h b/libs/ardour/ardour/types.h
index 809eb5b2b2..1a30cfd769 100644
--- a/libs/ardour/ardour/types.h
+++ b/libs/ardour/ardour/types.h
@@ -446,6 +446,12 @@ namespace ARDOUR {
 		Rectified
 	};
 
+	enum QuantizeType {
+		Plain,
+		Legato,
+		Groove
+	};
+
 } // namespace ARDOUR
 
 std::istream& operator>>(std::istream& o, ARDOUR::SampleFormat& sf);
diff --git a/libs/ardour/delivery.cc b/libs/ardour/delivery.cc
index 01ff226b5e..1b5f96d36c 100644
--- a/libs/ardour/delivery.cc
+++ b/libs/ardour/delivery.cc
@@ -22,6 +22,8 @@
 #include "pbd/enumwriter.h"
 #include "pbd/convert.h"
 
+#include "ardour/midi_buffer.h"
+
 #include "ardour/delivery.h"
 #include "ardour/audio_buffer.h"
 #include "ardour/amp.h"
diff --git a/libs/ardour/midi_model.cc b/libs/ardour/midi_model.cc
index 0c0c0ead5b..da524307f6 100644
--- a/libs/ardour/midi_model.cc
+++ b/libs/ardour/midi_model.cc
@@ -70,6 +70,19 @@ MidiModel::apply_command(Session& session, Command* cmd)
 	set_edited(true);
 }
 
+/** Apply a command as part of a larger reversible transaction
+ *
+ * Ownership of cmd is taken, it must not be deleted by the caller.
+ * The command will constitute one item on the undo stack.
+ */
+void
+MidiModel::apply_command_as_subcommand(Session& session, Command* cmd)
+{
+	(*cmd)();
+	session.add_command(cmd);
+	set_edited(true);
+}
+
 
 // DeltaCommand
 
@@ -107,17 +120,19 @@ MidiModel::DeltaCommand::operator()()
 {
 	// This could be made much faster by using a priority_queue for added and
 	// removed notes (or sort here), and doing a single iteration over _model
-	
+
 	Glib::Mutex::Lock lm (_model->_midi_source->mutex());
 	_model->_midi_source->invalidate(); // release model read lock
 	_model->write_lock();
 
-	for (NoteList::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
+	for (NoteList::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i) {
 		_model->add_note_unlocked(*i);
+	}
 
-	for (NoteList::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
+	for (NoteList::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i) {
 		_model->remove_note_unlocked(*i);
-
+	}
+	
 	_model->write_unlock();
 	_model->ContentsChanged(); /* EMIT SIGNAL */
 }
@@ -132,11 +147,13 @@ MidiModel::DeltaCommand::undo()
 	_model->_midi_source->invalidate(); // release model read lock
 	_model->write_lock();
 
-	for (NoteList::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i)
+	for (NoteList::iterator i = _added_notes.begin(); i != _added_notes.end(); ++i) {
 		_model->remove_note_unlocked(*i);
+	}
 
-	for (NoteList::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i)
+	for (NoteList::iterator i = _removed_notes.begin(); i != _removed_notes.end(); ++i) {
 		_model->add_note_unlocked(*i);
+	}
 
 	_model->write_unlock();
 	_model->ContentsChanged(); /* EMIT SIGNAL */
diff --git a/libs/ardour/midi_ring_buffer.cc b/libs/ardour/midi_ring_buffer.cc
index 746dc3b3eb..007d5271c8 100644
--- a/libs/ardour/midi_ring_buffer.cc
+++ b/libs/ardour/midi_ring_buffer.cc
@@ -24,7 +24,7 @@ using namespace std;
 
 namespace ARDOUR {
 
-/** Read a block of MIDI events from buffer.
+/** Read a block of MIDI events from buffer into a MidiBuffer.
  *
  * Timestamps of events returned are relative to start (i.e. event with stamp 0
  * occurred at start), with offset added.
@@ -106,11 +106,13 @@ MidiRingBuffer<T>::read(MidiBuffer& dst, nframes_t start, nframes_t end, nframes
 		// write MIDI buffer contents
 		success = Evoral::EventRingBuffer<T>::full_read(ev_size, write_loc);
 		
-		/*cerr << "wrote MidiEvent to Buffer: ";
+#if 0
+		cerr << "wrote MidiEvent to Buffer: " << hex;
 		for (size_t i=0; i < ev_size; ++i) {
-			printf("%X ", write_loc[i]);
+			cerr << (int) write_loc[i] << ' ';
 		}
-		printf("\n");*/
+		cerr << dec << endl;
+#endif
 
 		if (success) {
 			if (is_channel_event(status) && get_channel_mode() == ForceChannel) {
diff --git a/libs/ardour/midi_track.cc b/libs/ardour/midi_track.cc
index 5a53cecc3c..4c575e8cc4 100644
--- a/libs/ardour/midi_track.cc
+++ b/libs/ardour/midi_track.cc
@@ -401,7 +401,6 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 	_silent = false;
 
 	if ((dret = diskstream->process (transport_frame, nframes, can_record, rec_monitors_input)) != 0) {
-
 		silence (nframes);
 		return dret;
 	}
@@ -416,10 +415,10 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 
 		/* not actually recording, but we want to hear the input material anyway,
 		   at least potentially (depending on monitoring options)
-		   */
+		*/
 
 		passthru (start_frame, end_frame, nframes, 0);
-
+		
 	} else {
 		/*
 		   XXX is it true that the earlier test on n_outputs()
@@ -434,12 +433,15 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 
 		//const size_t limit = n_process_buffers().n_audio();
 		BufferSet& bufs = _session.get_scratch_buffers (n_process_buffers());
+		
+		diskstream->get_playback (bufs.get_midi(0), start_frame, end_frame);
 
-		diskstream->get_playback(bufs.get_midi(0), start_frame, end_frame);
+		/* append immediate messages to the first MIDI buffer (thus sending it to the first output port) */
+
+		write_out_of_band_data (bufs, start_frame, end_frame, nframes);	
 
 		process_output_buffers (bufs, start_frame, end_frame, nframes,
 				(!_session.get_record_enabled() || !Config->get_do_not_record_plugins()), declick);
-	
 	}
 
 	_main_outs->flush (nframes);
@@ -448,13 +450,12 @@ MidiTrack::roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 }
 
 void
-MidiTrack::write_controller_messages(MidiBuffer& output_buf, sframes_t /*start*/, sframes_t /*end*/, nframes_t nframes)
+MidiTrack::write_out_of_band_data (BufferSet& bufs, sframes_t /*start*/, sframes_t /*end*/, nframes_t nframes)
 {
-	// Append immediate events (UI controls)
+	// Append immediate events
 
-	// XXX TAKE _port_offset in Port into account???
-
-	_immediate_events.read (output_buf, 0, 0, nframes - 1); // all stamps = 0
+	MidiBuffer& buf (bufs.get_midi (0));
+	_immediate_events.read (buf, 0, 0, nframes - 1); // all stamps = 0
 }
 
 int
diff --git a/libs/ardour/quantize.cc b/libs/ardour/quantize.cc
index e5f4abeccf..becb3bd491 100644
--- a/libs/ardour/quantize.cc
+++ b/libs/ardour/quantize.cc
@@ -16,6 +16,7 @@
     Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 
 */
+#include <cmath>
 
 #include "pbd/basename.h"
 
@@ -31,15 +32,24 @@
 using namespace std;
 using namespace ARDOUR;
 
-
-/** Quantize notes, valid for MIDI regions only.
+/** Quantize notes
  *
- * Q is the quantize value in beats, ie 1.0 = quantize to beats,
+ * grid parameters are the quantize value in beats, ie 1.0 = quantize to beats,
  * 0.25 = quantize to beats/4, etc.
  */
-Quantize::Quantize (Session& s, double q)
-	: Filter (s)
-	, _q(q)
+
+Quantize::Quantize (Session& s, QuantizeType /* type */, 
+		    bool snap_start, bool snap_end,
+		    double start_grid, double end_grid, 
+		    float strength, float swing, float threshold)
+	: session (s)
+	, _snap_start (snap_start)
+	, _snap_end (snap_end)
+	, _start_grid(start_grid)
+	, _end_grid(end_grid)
+	, _strength (strength/100.0)
+	, _swing (swing/100.0)
+	, _threshold (threshold)
 {
 }
 
@@ -48,32 +58,70 @@ Quantize::~Quantize ()
 }
 
 int
-Quantize::run (boost::shared_ptr<Region> r)
+Quantize::operator () (std::vector<Evoral::Sequence<Evoral::MusicalTime>::Notes>& seqs)
 {
-	boost::shared_ptr<MidiRegion> region = boost::dynamic_pointer_cast<MidiRegion>(r);
-	if (!region)
-		return -1;
+	bool even;
 
-	// FIXME: how to make a whole file region if it isn't?
-	//assert(region->whole_file());
+	for (std::vector<Evoral::Sequence<Evoral::MusicalTime>::Notes>::iterator s = seqs.begin();
+	     s != seqs.end(); ++s) {
 
-	boost::shared_ptr<MidiSource> src = region->midi_source(0);
-	src->load_model();
+		even = false;
 
-	boost::shared_ptr<MidiModel> model = src->model();
-	
-	for (Evoral::Sequence<MidiModel::TimeType>::Notes::iterator i = model->notes().begin();
-			i != model->notes().end(); ++i) {
-		const double new_time = lrint((*i)->time() / _q) * _q;
-		double new_dur = lrint((*i)->length() / _q) * _q;
-		if (new_dur == 0.0)
-			new_dur = _q;
-		
-		(*i)->set_time(new_time);
-		(*i)->set_length(new_dur);
+		for (Evoral::Sequence<MidiModel::TimeType>::Notes::iterator i = (*s).begin();
+		     i != (*s).end(); ++i) {
+			
+			double new_start = round ((*i)->time() / _start_grid) * _start_grid; 
+			double new_end = round ((*i)->end_time() / _end_grid) * _end_grid;
+			double delta;
+			
+			if (_swing > 0.0 && !even) {
+				
+				double next_grid = new_start + _start_grid;
+				
+				/* find a spot 2/3 (* swing factor) of the way between the grid point
+				   we would put this note at, and the nominal position of the next note.
+				*/
+				
+				new_start = new_start + (2.0/3.0 * _swing * (next_grid - new_start));
+				
+			} else if (_swing < 0.0 && !even) {
+				
+				double prev_grid = new_start - _start_grid;
+				
+				/* find a spot 2/3 (* swing factor) of the way between the grid point
+				   we would put this note at, and the nominal position of the previous note.
+				*/
+				
+				new_start = new_start - (2.0/3.0 * _swing * (new_start - prev_grid));
+				
+			}
+			
+			delta = new_start - (*i)->time();
+			
+			if (fabs (delta) >= _threshold) {
+				if (_snap_start) {
+					delta *= _strength;
+					(*i)->set_time ((*i)->time() + delta);
+				}
+			}
+			
+			if (_snap_end) {
+				delta = new_end - (*i)->end_time();
+				
+				if (fabs (delta) >= _threshold) {
+					double new_dur = new_end - new_start;
+					
+					if (new_dur == 0.0) {
+						new_dur = _end_grid;
+					}
+					
+					(*i)->set_length (new_dur);
+				}
+			}
+			
+			even = !even;
+		}
 	}
 
-	model->set_edited(true);
-
 	return 0;
 }
diff --git a/libs/ardour/route.cc b/libs/ardour/route.cc
index 989cecdd6b..e922a2f33f 100644
--- a/libs/ardour/route.cc
+++ b/libs/ardour/route.cc
@@ -479,13 +479,16 @@ Route::passthru (sframes_t start_frame, sframes_t end_frame, nframes_t nframes,
 		}
 	}
 
+	write_out_of_band_data (bufs, start_frame, end_frame, nframes);
 	process_output_buffers (bufs, start_frame, end_frame, nframes, true, declick);
 }
 
 void
 Route::passthru_silence (sframes_t start_frame, sframes_t end_frame, nframes_t nframes, int declick)
 {
-	process_output_buffers (_session.get_silent_buffers (n_process_buffers()), start_frame, end_frame, nframes, true, declick);
+	BufferSet& bufs (_session.get_silent_buffers (n_process_buffers()));
+	write_out_of_band_data (bufs, start_frame, end_frame, nframes);
+	process_output_buffers (bufs, start_frame, end_frame, nframes, true, declick);
 }
 
 void
diff --git a/libs/ardour/tempo.cc b/libs/ardour/tempo.cc
index 3056016752..a2307901bc 100644
--- a/libs/ardour/tempo.cc
+++ b/libs/ardour/tempo.cc
@@ -1099,30 +1099,91 @@ TempoMap::round_to_beat (nframes_t fr, int dir)
 }
 
 nframes_t
-
-TempoMap::round_to_beat_subdivision (nframes_t fr, int sub_num)
+TempoMap::round_to_beat_subdivision (nframes_t fr, int sub_num, int dir)
 {
 
 	BBT_Time the_beat;
 	uint32_t ticks_one_half_subdivisions_worth;
 	uint32_t ticks_one_subdivisions_worth;
+	uint32_t difference;
 
 	bbt_time(fr, the_beat);
 
 	ticks_one_subdivisions_worth = (uint32_t)Meter::ticks_per_beat / sub_num;
 	ticks_one_half_subdivisions_worth = ticks_one_subdivisions_worth / 2;
+	
+	if (dir > 0) {
+		
+		/* round to next */
 
-	if (the_beat.ticks % ticks_one_subdivisions_worth > ticks_one_half_subdivisions_worth) {
-	  uint32_t difference = ticks_one_subdivisions_worth - (the_beat.ticks % ticks_one_subdivisions_worth);
-	  if (the_beat.ticks + difference >= (uint32_t)Meter::ticks_per_beat) {
-	    the_beat.beats++;
-	    the_beat.ticks += difference;
-	    the_beat.ticks -= (uint32_t)Meter::ticks_per_beat;
-	  } else {  
-	    the_beat.ticks += difference;
-	  }
-	} else {
-	  the_beat.ticks -= the_beat.ticks % ticks_one_subdivisions_worth;
+		uint32_t mod = the_beat.ticks % ticks_one_subdivisions_worth;
+
+		if (mod == 0) { 
+			/* right on the subdivision, so the difference is just the subdivision ticks */
+			difference = ticks_one_subdivisions_worth;
+
+		} else {
+			/* not on subdivision, compute distance to next subdivision */
+
+			difference = ticks_one_subdivisions_worth - mod;
+		}
+
+		if (the_beat.ticks + difference >= (uint32_t)Meter::ticks_per_beat) {
+			the_beat.beats++;
+			the_beat.ticks += difference;
+			the_beat.ticks -= (uint32_t)Meter::ticks_per_beat;
+		} else {  
+			the_beat.ticks += difference;
+		}
+
+	} else if (dir < 0) {
+
+		/* round to previous */
+
+		uint32_t mod = the_beat.ticks % ticks_one_subdivisions_worth;
+
+		if (mod == 0) { 
+			/* right on the subdivision, so the difference is just the subdivision ticks */
+			difference = ticks_one_subdivisions_worth;
+			cerr << "On the sub, move by 1 sub = " << difference << endl;
+		} else {
+			/* not on subdivision, compute distance to previous subdivision, which
+			   is just the modulus.
+			*/
+
+			difference = mod;
+			cerr << "off the sub, move by 1 sub = " << difference << endl;
+		}
+
+
+		cerr << "ticks = " << the_beat.ticks << endl;
+
+		if (the_beat.ticks < difference) {
+			cerr << "backup beats, set ticks to "
+			     << (uint32_t)Meter::ticks_per_beat - difference << endl;
+			the_beat.beats--;
+			the_beat.ticks = (uint32_t)Meter::ticks_per_beat - difference;
+		} else {  
+			cerr << " reduce ticks\n";
+			the_beat.ticks -= difference;
+		}
+
+	} else { 
+		/* round to nearest */
+
+		if (the_beat.ticks % ticks_one_subdivisions_worth > ticks_one_half_subdivisions_worth) {
+			difference = ticks_one_subdivisions_worth - (the_beat.ticks % ticks_one_subdivisions_worth);
+			if (the_beat.ticks + difference >= (uint32_t)Meter::ticks_per_beat) {
+				the_beat.beats++;
+				the_beat.ticks += difference;
+				the_beat.ticks -= (uint32_t)Meter::ticks_per_beat;
+			} else {  
+				the_beat.ticks += difference;
+			}
+		} else {
+			// difference = ticks_one_subdivisions_worth - (the_beat.ticks % ticks_one_subdivisions_worth);
+			the_beat.ticks -= the_beat.ticks % ticks_one_subdivisions_worth;
+		}
 	}
 
 	return frame_time (the_beat);
@@ -1139,7 +1200,9 @@ TempoMap::round_to_type (nframes_t frame, int dir, BBTPointType type)
 	switch (type) {
 	case Bar:
 		if (dir < 0) {
-			/* relax */
+			if (bbt.bars > 1) {
+				bbt.bars--;
+			}
 		} else if (dir > 0) {
 			if (bbt.beats > 0) {
 				bbt.bars++;
@@ -1157,7 +1220,9 @@ TempoMap::round_to_type (nframes_t frame, int dir, BBTPointType type)
 	
 	case Beat:
 		if (dir < 0) {
-			/* relax */
+			if (bbt.beats > 1) {
+				bbt.beats--;
+			}
 		} else if (dir > 0) {
 			if (bbt.ticks > 0) {
 				bbt.beats++;
@@ -1178,11 +1243,12 @@ TempoMap::round_to_type (nframes_t frame, int dir, BBTPointType type)
 	
 	}
 	
-	/* 
+	/*
 	cerr << "for " << frame << " round to " << bbt << " using "
 	     << metric.start()
 	     << endl;
 	*/
+	
 	return metric.frame() + count_frames_between (metric.start(), bbt);
 }
 
diff --git a/libs/ardour/track.cc b/libs/ardour/track.cc
index 64ec77b683..23da42f86e 100644
--- a/libs/ardour/track.cc
+++ b/libs/ardour/track.cc
@@ -24,6 +24,7 @@
 #include "ardour/audioplaylist.h"
 #include "ardour/audioregion.h"
 #include "ardour/audiosource.h"
+#include "ardour/delivery.h"
 #include "ardour/diskstream.h"
 #include "ardour/io_processor.h"
 #include "ardour/meter.h"
@@ -316,6 +317,8 @@ Track::no_roll (nframes_t nframes, sframes_t start_frame, sframes_t end_frame,
 		passthru (start_frame, end_frame, nframes, false);
 	}
 
+	_main_outs->flush (nframes);
+
 	return 0;
 }
 
diff --git a/libs/evoral/evoral/Event.hpp b/libs/evoral/evoral/Event.hpp
index 7703963b95..096d00de35 100644
--- a/libs/evoral/evoral/Event.hpp
+++ b/libs/evoral/evoral/Event.hpp
@@ -57,7 +57,8 @@ struct Event {
 
 	inline const Event& operator=(const Event& copy) {
 		_type = copy._type;
-		_time = copy._time;
+		_original_time = copy._original_time;
+		_nominal_time = copy._nominal_time;
 		if (_owns_buf) {
 			if (copy._buf) {
 				if (copy._size > _size) {
@@ -84,7 +85,8 @@ struct Event {
 		}
 
 		_type = copy._type;
-		_time = copy._time;
+		_original_time = copy._nominal_time;
+		_nominal_time = copy._nominal_time;
 		_size = copy._size;
 		_buf  = copy._buf;
 	}
@@ -99,7 +101,8 @@ struct Event {
 			_buf = buf;
 		}
 
-		_time = t;
+		_original_time = t;
+		_nominal_time = t;
 		_size = size;
 	}
 
@@ -107,7 +110,10 @@ struct Event {
 		if (_type != other._type)
 			return false;
 
-		if (_time != other._time)
+		if (_nominal_time != other._nominal_time)
+			return false;
+
+		if (_original_time != other._original_time)
 			return false;
 
 		if (_size != other._size)
@@ -151,7 +157,8 @@ struct Event {
 	
 	inline void clear() {
 		_type = 0;
-		_time = 0;
+		_original_time = 0;
+		_nominal_time = 0;
 		_size = 0;
 		_buf  = NULL;
 	}
@@ -164,8 +171,10 @@ struct Event {
 
 	inline EventType   event_type()            const { return _type; }
 	inline void        set_event_type(EventType t)   { _type = t; }
-	inline Time        time()                  const { return _time; }
-	inline Time&       time()                        { return _time; }
+	inline Time        time()                  const { return _nominal_time; }
+	inline Time&       time()                        { return _nominal_time; }
+	inline Time        original_time()         const { return _original_time; }
+	inline Time&       original_time()               { return _original_time; }
 	inline uint32_t    size()                  const { return _size; }
 	inline uint32_t&   size()                        { return _size; }
 
@@ -174,7 +183,8 @@ struct Event {
 
 protected:
 	EventType _type; /**< Type of event (application relative, NOT MIDI 'type') */
-	Time      _time; /**< Sample index (or beat time) at which event is valid */
+	Time      _original_time; /**< Sample index (or beat time) at which event is valid */
+        Time      _nominal_time; /**< quantized version of _time, used in preference */
 	uint32_t  _size; /**< Number of uint8_ts of data in \a buffer */
 	uint8_t*  _buf;  /**< Raw MIDI data */
 
diff --git a/libs/evoral/evoral/Note.hpp b/libs/evoral/evoral/Note.hpp
index c8365588ee..b891c2096a 100644
--- a/libs/evoral/evoral/Note.hpp
+++ b/libs/evoral/evoral/Note.hpp
@@ -24,7 +24,6 @@
 
 namespace Evoral {
 
-
 /** An abstract (protocol agnostic) note.
  *
  * Currently a note is defined as (on event, length, off event).
@@ -76,5 +75,14 @@ private:
 
 } // namespace Evoral
 
+template<typename Time>
+std::ostream& operator<<(std::ostream& o, const Evoral::Note<Time>& n) {
+	o << "Note: pitch = " << (int) n.note()
+	  << " @ " << n.time() << " .. " << n.end_time() 
+	  << " velocity " << (int) n.velocity() 
+	  << " chn " << (int) n.channel();
+	return o;
+}
+
 #endif // EVORAL_NOTE_HPP
 
diff --git a/libs/evoral/evoral/Sequence.hpp b/libs/evoral/evoral/Sequence.hpp
index b059f4e231..df8c48a1b6 100644
--- a/libs/evoral/evoral/Sequence.hpp
+++ b/libs/evoral/evoral/Sequence.hpp
@@ -92,6 +92,14 @@ public:
 		return a->time() < b->time();
 	}
 
+	struct LaterNoteComparator {
+		typedef const Note<Time>* value_type;
+		inline bool operator()(const boost::shared_ptr< const Note<Time> > a,
+		                       const boost::shared_ptr< const Note<Time> > b) const { 
+			return a->time() > b->time();
+		}
+	};
+
 	struct LaterNoteEndComparator {
 		typedef const Note<Time>* value_type;
 		inline bool operator()(const boost::shared_ptr< const Note<Time> > a,
diff --git a/libs/evoral/evoral/midi_util.h b/libs/evoral/evoral/midi_util.h
index fd4526d4a8..6dee894546 100644
--- a/libs/evoral/evoral/midi_util.h
+++ b/libs/evoral/evoral/midi_util.h
@@ -21,6 +21,8 @@
 
 #include <stdint.h>
 #include <stdbool.h>
+#include <string>
+#include <sys/types.h>
 #include <assert.h>
 #include "evoral/midi_events.h"
 
@@ -113,6 +115,7 @@ midi_event_is_valid(const uint8_t* buffer, size_t len)
 	return true;
 }
 
+std::string midi_note_name (uint8_t noteval);
 
 } // namespace Evoral
 
diff --git a/libs/evoral/evoral/types.hpp b/libs/evoral/evoral/types.hpp
index 2643b82439..e9ce503068 100644
--- a/libs/evoral/evoral/types.hpp
+++ b/libs/evoral/evoral/types.hpp
@@ -27,6 +27,9 @@ namespace Evoral {
 /** Frame count (i.e. length of time in audio frames) */
 typedef uint32_t FrameTime;
 
+/** Musical time: beats relative to some defined origin */
+typedef double MusicalTime;
+
 /** Type of an event (opaque, mapped by application) */
 typedef uint32_t EventType;
 
diff --git a/libs/evoral/src/Event.cpp b/libs/evoral/src/Event.cpp
index dc13a070ee..d70ba1a04b 100644
--- a/libs/evoral/src/Event.cpp
+++ b/libs/evoral/src/Event.cpp
@@ -25,7 +25,8 @@ namespace Evoral {
 template<typename Timestamp>
 Event<Timestamp>::Event(EventType type, Timestamp time, uint32_t size, uint8_t* buf, bool alloc)
 	: _type(type)
-	, _time(time)
+	, _original_time(time)
+	, _nominal_time(time)
 	, _size(size)
 	, _buf(buf)
 	, _owns_buf(alloc)
@@ -43,7 +44,8 @@ Event<Timestamp>::Event(EventType type, Timestamp time, uint32_t size, uint8_t*
 template<typename Timestamp>
 Event<Timestamp>::Event(const Event& copy, bool owns_buf)
 	: _type(copy._type)
-	, _time(copy._time)
+	, _original_time(copy._original_time)
+	, _nominal_time(copy._nominal_time)
 	, _size(copy._size)
 	, _buf(copy._buf)
 	, _owns_buf(owns_buf)
@@ -67,7 +69,7 @@ Event<Timestamp>::~Event() {
 
 #endif // EVORAL_EVENT_ALLOC
 
-template class Event<double>;
+template class Event<Evoral::MusicalTime>;
 template class Event<uint32_t>;
 
 } // namespace Evoral
diff --git a/libs/evoral/src/MIDIEvent.cpp b/libs/evoral/src/MIDIEvent.cpp
index ee71ca55d6..4af451a3b1 100644
--- a/libs/evoral/src/MIDIEvent.cpp
+++ b/libs/evoral/src/MIDIEvent.cpp
@@ -81,7 +81,7 @@ MIDIEvent<Time>::to_xml() const
 
 #endif // EVORAL_MIDI_XML
 
-template class MIDIEvent<double>;
+template class MIDIEvent<Evoral::MusicalTime>;
 
 } // namespace Evoral
 
diff --git a/libs/evoral/src/Note.cpp b/libs/evoral/src/Note.cpp
index d86f7b8948..cc3d4fee62 100644
--- a/libs/evoral/src/Note.cpp
+++ b/libs/evoral/src/Note.cpp
@@ -73,7 +73,6 @@ Note<Time>::Note(const Note<Time>& copy)
 	assert(channel() == copy.channel());
 }
 
-
 template<typename Time>
 Note<Time>::~Note()
 {
@@ -98,6 +97,7 @@ Note<Time>::operator=(const Note<Time>& copy)
 	return *this;
 }
 
-template class Note<double>;
+template class Note<Evoral::MusicalTime>;
 
 } // namespace Evoral
+
diff --git a/libs/evoral/src/OldSMF.cpp b/libs/evoral/src/OldSMF.cpp
index 1440e3e128..7fc079aaed 100644
--- a/libs/evoral/src/OldSMF.cpp
+++ b/libs/evoral/src/OldSMF.cpp
@@ -364,6 +364,6 @@ SMF<Time>::write_var_len(uint32_t value)
 	return ret;
 }
 
-template class SMF<double>;
+template class SMF<Evoral::MusicalTime>;
 
 } // namespace Evoral
diff --git a/libs/evoral/src/Sequence.cpp b/libs/evoral/src/Sequence.cpp
index 39772e6a6e..3b1729cfe8 100644
--- a/libs/evoral/src/Sequence.cpp
+++ b/libs/evoral/src/Sequence.cpp
@@ -787,7 +787,7 @@ Sequence<Time>::set_notes (const Sequence<Time>::Notes& n)
 	_notes = n;
 }
 
-template class Sequence<double>;
+template class Sequence<Evoral::MusicalTime>;
 
 } // namespace Evoral
 
diff --git a/libs/evoral/src/midi_util.cpp b/libs/evoral/src/midi_util.cpp
new file mode 100644
index 0000000000..5f088cb925
--- /dev/null
+++ b/libs/evoral/src/midi_util.cpp
@@ -0,0 +1,55 @@
+/* This file is part of Evoral.
+ * Copyright (C) 2008 Dave Robillard <http://drobilla.net>
+ * Copyright (C) 2009 Paul Davis
+ * 
+ * Evoral is free software; you can redistribute it and/or modify it under the
+ * terms of the GNU General Public License as published by the Free Software
+ * Foundation; either version 2 of the License, or (at your option) any later
+ * version.
+ * 
+ * Evoral is distributed in the hope that it will be useful, but WITHOUT ANY
+ * WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+ * FOR A PARTICULAR PURPOSE.  See the GNU General Public License for details.
+ * 
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+#include "evoral/midi_util.h"
+#include <cstdio>
+
+namespace Evoral {
+
+std::string
+midi_note_name (uint8_t val)
+{
+	if (val > 127) {
+		return "???";
+	}
+
+	static const char* notes[] = {
+		"c",
+		"c#",
+		"d",
+		"d#",
+		"e",
+		"f",
+		"f#",
+		"g",
+		"a",
+		"a#",
+		"b",
+		"b#"
+	};
+
+	int octave = val/12;
+	static char buf[8];
+	
+	val -= octave*12;
+
+	snprintf (buf, sizeof (buf), "%s%d", notes[val], octave);
+	return buf;
+}
+
+}
diff --git a/libs/evoral/wscript b/libs/evoral/wscript
index dd5b6f6db9..a625e4d1f4 100644
--- a/libs/evoral/wscript
+++ b/libs/evoral/wscript
@@ -68,6 +68,7 @@ def build(bld):
 		src/ControlSet.cpp
 		src/Curve.cpp
 		src/Event.cpp
+		src/midi_util.cpp
 		src/MIDIEvent.cpp
 		src/Note.cpp
 		src/SMF.cpp
diff --git a/libs/gtkmm2ext/tearoff.cc b/libs/gtkmm2ext/tearoff.cc
index eb5dc8f7ef..c33663e8f7 100644
--- a/libs/gtkmm2ext/tearoff.cc
+++ b/libs/gtkmm2ext/tearoff.cc
@@ -47,7 +47,7 @@ TearOff::TearOff (Widget& c, bool allow_resize)
 	close_event_box.set_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK);
 	close_event_box.signal_button_release_event().connect (mem_fun (*this, &TearOff::close_click));
 	
-	own_window.add_events (BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|POINTER_MOTION_MASK|POINTER_MOTION_HINT_MASK);
+	own_window.add_events (KEY_PRESS_MASK|KEY_RELEASE_MASK|BUTTON_PRESS_MASK|BUTTON_RELEASE_MASK|POINTER_MOTION_MASK|POINTER_MOTION_HINT_MASK);
 	own_window.set_resizable (allow_resize);
 	own_window.set_type_hint (WINDOW_TYPE_HINT_TOOLBAR);