diff --git a/libs/evoral/SMF.cc b/libs/evoral/SMF.cc
index 9dbfc7f58b..3d9dbd08db 100644
--- a/libs/evoral/SMF.cc
+++ b/libs/evoral/SMF.cc
@@ -548,7 +548,15 @@ SMF::begin_write()
 	assert(_smf_track);
 
 	smf_add_track(_smf, _smf_track);
-	assert(_smf->number_of_tracks == 1);
+}
+
+void
+SMF::end_track ()
+{
+	/* nothing to do in libsmf API to "close" the track, it seems */
+	_smf_track = smf_track_new();
+	assert (_smf_track);
+	smf_add_track(_smf, _smf_track);
 }
 
 void
diff --git a/libs/evoral/evoral/SMF.h b/libs/evoral/evoral/SMF.h
index f007fe3a76..67ba0074b2 100644
--- a/libs/evoral/evoral/SMF.h
+++ b/libs/evoral/evoral/SMF.h
@@ -168,6 +168,8 @@ public:
 	bool         _has_pgm_change;
 	int          _num_channels;
 	UsedChannels _used_channels;
+
+	void end_track ();
 };
 
 }; /* namespace Evoral */