diff --git a/libs/ardour/ardour/session_configuration_vars.h b/libs/ardour/ardour/session_configuration_vars.h
index f9be1ed4c5..ca4e555451 100644
--- a/libs/ardour/ardour/session_configuration_vars.h
+++ b/libs/ardour/ardour/session_configuration_vars.h
@@ -43,6 +43,8 @@ CONFIG_VARIABLE (bool, punch_out, "punch-out", false)
 CONFIG_VARIABLE (bool, count_in, "count-in", false)
 CONFIG_VARIABLE (MonitorChoice, session_monitoring, "session-monitoring", MonitorAuto)
 CONFIG_VARIABLE (bool, layered_record_mode, "layered-record-mode", false)
+CONFIG_VARIABLE (RecordMode, record_mode, "record-mode", RecLayered)
+CONFIG_VARIABLE (bool, draw_opaque_midi_regions, "draw-opaque-midi_regions", false)
 CONFIG_VARIABLE (uint32_t, subframes_per_frame, "subframes-per-frame", 100)
 CONFIG_VARIABLE (Timecode::TimecodeFormat, timecode_format, "timecode-format", Timecode::timecode_30)
 CONFIG_VARIABLE (samplecnt_t, minitimeline_span, "minitimeline-span", 120) // seconds
diff --git a/libs/ardour/ardour/types.h b/libs/ardour/ardour/types.h
index 362a81b097..3ead89210a 100644
--- a/libs/ardour/ardour/types.h
+++ b/libs/ardour/ardour/types.h
@@ -239,6 +239,12 @@ enum TrackMode {
 	Destructive,
 };
 
+enum RecordMode {
+	RecLayered,
+	RecNonLayered,
+	RecSoundOnSound
+};
+
 enum NoteMode {
 	Sustained,
 	Percussive
diff --git a/libs/ardour/ardour/types_convert.h b/libs/ardour/ardour/types_convert.h
index 5746672519..dedbd4c7e7 100644
--- a/libs/ardour/ardour/types_convert.h
+++ b/libs/ardour/ardour/types_convert.h
@@ -48,6 +48,7 @@ DEFINE_ENUM_CONVERT(ARDOUR::HeaderFormat)
 DEFINE_ENUM_CONVERT(ARDOUR::AutoConnectOption)
 DEFINE_ENUM_CONVERT(ARDOUR::TracksAutoNamingRule)
 DEFINE_ENUM_CONVERT(ARDOUR::TrackMode)
+DEFINE_ENUM_CONVERT(ARDOUR::RecordMode)
 DEFINE_ENUM_CONVERT(ARDOUR::EditMode)
 DEFINE_ENUM_CONVERT(ARDOUR::RippleMode)
 DEFINE_ENUM_CONVERT(ARDOUR::MonitorModel)
diff --git a/libs/ardour/enums.cc b/libs/ardour/enums.cc
index 1c67fe65cb..11be5def6d 100644
--- a/libs/ardour/enums.cc
+++ b/libs/ardour/enums.cc
@@ -71,6 +71,7 @@ setup_enum_writer ()
 	DiskIOPoint _DiskIOPoint;
 	MeterType _MeterType;
 	TrackMode _TrackMode;
+	RecordMode _RecordMode;
 	NoteMode _NoteMode;
 	ChannelMode _ChannelMode;
 	ColorMode _ColorMode;
@@ -257,6 +258,11 @@ setup_enum_writer ()
 	REGISTER_ENUM (Destructive);
 	REGISTER (_TrackMode);
 
+	REGISTER_ENUM (RecLayered);
+	REGISTER_ENUM (RecNonLayered);
+	REGISTER_ENUM (RecSoundOnSound);
+	REGISTER (_RecordMode);
+
 	REGISTER_ENUM (Sustained);
 	REGISTER_ENUM (Percussive);
 	REGISTER (_NoteMode);