diff --git a/libs/ardour/luabindings.cc b/libs/ardour/luabindings.cc
index 2f8035549d..da3fed761e 100644
--- a/libs/ardour/luabindings.cc
+++ b/libs/ardour/luabindings.cc
@@ -663,6 +663,13 @@ LuaBindings::common (lua_State* L)
 		.beginClass <Progress> ("Progress")
 		.endClass ()
 
+		.beginClass <MusicFrame> ("MusicFrame")
+		.addConstructor <void (*) (framepos_t, int32_t)> ()
+		.addFunction ("set", &MusicFrame::set)
+		.addData ("frame", &MusicFrame::frame)
+		.addData ("division", &MusicFrame::division)
+		.endClass ()
+
 		.beginClass <AudioRange> ("AudioRange")
 		.addConstructor <void (*) (framepos_t, framepos_t, uint32_t)> ()
 		.addFunction ("length", &AudioRange::length)
@@ -1594,6 +1601,13 @@ LuaBindings::common (lua_State* L)
 		.addConst ("PostFader", ARDOUR::Placement(PostFader))
 		.endNamespace ()
 
+		.beginNamespace ("MonitorChoice")
+		.addConst ("MonitorAuto", ARDOUR::MonitorChoice(MonitorAuto))
+		.addConst ("MonitorInput", ARDOUR::MonitorChoice(MonitorInput))
+		.addConst ("MonitorDisk", ARDOUR::MonitorChoice(MonitorDisk))
+		.addConst ("MonitorCue", ARDOUR::MonitorChoice(MonitorCue))
+		.endNamespace ()
+
 		.beginNamespace ("NoteMode")
 		.addConst ("Sustained", ARDOUR::NoteMode(Sustained))
 		.addConst ("Percussive", ARDOUR::NoteMode(Percussive))