diff --git a/gtk2_ardour/audio_streamview.cc b/gtk2_ardour/audio_streamview.cc
index 7c76cd7876..65efd9654c 100644
--- a/gtk2_ardour/audio_streamview.cc
+++ b/gtk2_ardour/audio_streamview.cc
@@ -119,16 +119,16 @@ AudioStreamView::create_region_view (boost::shared_ptr<Region> r, bool wait_for_
 	case NonLayered:
 	case Normal:
 		if (recording) {
-			region_view = new AudioRegionView (canvas_group, _trackview, region,
+			region_view = new AudioRegionView (_canvas_group, _trackview, region,
 					_samples_per_unit, region_color, recording, TimeAxisViewItem::Visibility(
 							TimeAxisViewItem::ShowFrame | TimeAxisViewItem::HideFrameRight));
 		} else {
-			region_view = new AudioRegionView (canvas_group, _trackview, region,
+			region_view = new AudioRegionView (_canvas_group, _trackview, region,
 					_samples_per_unit, region_color);
 		}
 		break;
 	case Destructive:
-		region_view = new TapeAudioRegionView (canvas_group, _trackview, region,
+		region_view = new TapeAudioRegionView (_canvas_group, _trackview, region,
 				_samples_per_unit, region_color);
 		break;
 	default:
@@ -516,7 +516,7 @@ AudioStreamView::setup_rec_box ()
 				break;
 			}
 
-			ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
+			ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*_canvas_group);
 			rec_rect->property_x1() = xstart;
 			rec_rect->property_y1() = 1.0;
 			rec_rect->property_x2() = xend;
diff --git a/gtk2_ardour/automation_streamview.cc b/gtk2_ardour/automation_streamview.cc
index 4177e729fe..60c2e44076 100644
--- a/gtk2_ardour/automation_streamview.cc
+++ b/gtk2_ardour/automation_streamview.cc
@@ -110,7 +110,7 @@ AutomationStreamView::add_region_view_internal (boost::shared_ptr<Region> region
 		}
 	}
 
-	region_view = new AutomationRegionView (canvas_group, _automation_view, region,
+	region_view = new AutomationRegionView (_canvas_group, _automation_view, region,
 			_controller->controllable()->parameter(), list,
 			_samples_per_unit, region_color);
 
diff --git a/gtk2_ardour/midi_streamview.cc b/gtk2_ardour/midi_streamview.cc
index 6fe2f01a90..826538dc50 100644
--- a/gtk2_ardour/midi_streamview.cc
+++ b/gtk2_ardour/midi_streamview.cc
@@ -71,12 +71,12 @@ MidiStreamView::MidiStreamView (MidiTimeAxisView& tv)
 	}
 
 	/* use a group dedicated to MIDI underlays. Audio underlays are not in this group. */
-	midi_underlay_group = new ArdourCanvas::Group (*canvas_group);
+	midi_underlay_group = new ArdourCanvas::Group (*_canvas_group);
 	midi_underlay_group->lower_to_bottom();
 
 	/* put the note lines in the timeaxisview's group, so it
 	   can be put below ghost regions from MIDI underlays*/
-	_note_lines = new ArdourCanvas::LineSet(*canvas_group, ArdourCanvas::LineSet::Horizontal);
+	_note_lines = new ArdourCanvas::LineSet(*_canvas_group, ArdourCanvas::LineSet::Horizontal);
 
 	_note_lines->property_x1() = 0;
 	_note_lines->property_y1() = 0;
@@ -137,7 +137,7 @@ MidiStreamView::create_region_view (boost::shared_ptr<Region> r, bool /*wfd*/, b
 		return 0;
 	}
 
-	RegionView* region_view = new MidiRegionView (canvas_group, _trackview, region,
+	RegionView* region_view = new MidiRegionView (_canvas_group, _trackview, region,
 						      _samples_per_unit, region_color);
 
 	region_view->init (region_color, false);
@@ -444,7 +444,7 @@ MidiStreamView::setup_rec_box ()
 			xend = xstart;
 			fill_color = ARDOUR_UI::config()->canvasvar_RecordingRect.get();
 
-			ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*canvas_group);
+			ArdourCanvas::SimpleRect * rec_rect = new Gnome::Canvas::SimpleRect (*_canvas_group);
 			rec_rect->property_x1() = xstart;
 			rec_rect->property_y1() = 1.0;
 			rec_rect->property_x2() = xend;
diff --git a/gtk2_ardour/streamview.cc b/gtk2_ardour/streamview.cc
index 048a3d23db..eadaa29af8 100644
--- a/gtk2_ardour/streamview.cc
+++ b/gtk2_ardour/streamview.cc
@@ -46,11 +46,12 @@ using namespace ARDOUR;
 using namespace PBD;
 using namespace Editing;
 
-StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* group)
+StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* background_group, ArdourCanvas::Group* canvas_group)
 	: _trackview (tv)
-	, owns_canvas_group(group == 0)
-	, _background_group (new ArdourCanvas::Group (*_trackview.canvas_background()))
-	, canvas_group(group ? group : new ArdourCanvas::Group(*_trackview.canvas_display()))
+	, owns_background_group (background_group == 0)
+	, owns_canvas_group (canvas_group == 0)
+	, _background_group (background_group ? background_group : new ArdourCanvas::Group (*_trackview.canvas_background()))
+	, _canvas_group (canvas_group ? canvas_group : new ArdourCanvas::Group(*_trackview.canvas_display()))
 	, _samples_per_unit (_trackview.editor().get_current_zoom ())
 	, rec_updating(false)
 	, rec_active(false)
@@ -63,7 +64,7 @@ StreamView::StreamView (RouteTimeAxisView& tv, ArdourCanvas::Group* group)
 {
 	/* set_position() will position the group */
 
-	canvas_rect = new ArdourCanvas::SimpleRect (*canvas_group);
+	canvas_rect = new ArdourCanvas::SimpleRect (*_background_group);
 	canvas_rect->property_x1() = 0.0;
 	canvas_rect->property_y1() = 0.0;
 	canvas_rect->property_x2() = _trackview.editor().get_physical_screen_width ();
@@ -94,8 +95,12 @@ StreamView::~StreamView ()
 
 	delete canvas_rect;
 
+	if (owns_background_group) {
+		delete _background_group;
+	}
+	
 	if (owns_canvas_group) {
-		delete canvas_group;
+		delete _canvas_group;
 	}
 }
 
@@ -110,8 +115,8 @@ StreamView::attach ()
 int
 StreamView::set_position (gdouble x, gdouble y)
 {
-	canvas_group->property_x() = x;
-	canvas_group->property_y() = y;
+	_canvas_group->property_x() = x;
+	_canvas_group->property_y() = y;
 	return 0;
 }
 
diff --git a/gtk2_ardour/streamview.h b/gtk2_ardour/streamview.h
index 14b30a42fc..0bf770837f 100644
--- a/gtk2_ardour/streamview.h
+++ b/gtk2_ardour/streamview.h
@@ -77,7 +77,7 @@ public:
 	LayerDisplay layer_display () const { return _layer_display; }
 
 	ArdourCanvas::Group* background_group() { return _background_group; }
-	ArdourCanvas::Group* canvas_item() { return canvas_group; }
+	ArdourCanvas::Group* canvas_item() { return _canvas_group; }
 
 	enum ColorTarget {
 		RegionColor,
@@ -116,7 +116,7 @@ public:
 	sigc::signal<void> HeightChanged;
 
 protected:
-	StreamView (RouteTimeAxisView&, ArdourCanvas::Group* group = NULL);
+	StreamView (RouteTimeAxisView&, ArdourCanvas::Group* background_group = 0, ArdourCanvas::Group* canvas_group = 0);
 
 	void         transport_changed();
 	void         transport_looped();
@@ -140,9 +140,10 @@ protected:
 	virtual void color_handler () = 0;
 
 	RouteTimeAxisView&        _trackview;
+	bool                      owns_background_group;
 	bool                      owns_canvas_group;
 	ArdourCanvas::Group*      _background_group;
-	ArdourCanvas::Group*      canvas_group;
+	ArdourCanvas::Group*      _canvas_group;
 	ArdourCanvas::SimpleRect* canvas_rect; /* frame around the whole thing */
 
 	typedef std::list<RegionView* > RegionViewList;