diff --git a/libs/ardour/ardour/beatbox.h b/libs/ardour/ardour/beatbox.h
index 02bd2b7b70..2e82a6ae1d 100644
--- a/libs/ardour/ardour/beatbox.h
+++ b/libs/ardour/ardour/beatbox.h
@@ -64,6 +64,7 @@ class BeatBox : public ARDOUR::Processor {
 
 	void add_note (int number, int velocity, Timecode::BBT_Time at);
 	void remove_note (int number, Timecode::BBT_Time at);
+	void edit_note_number (int old_number, int new_number);
 
 	void set_measure_count (int measures);
 	void set_meter (int beats, int beat_type);
diff --git a/libs/ardour/beatbox.cc b/libs/ardour/beatbox.cc
index af6f23fbc3..209c810042 100644
--- a/libs/ardour/beatbox.cc
+++ b/libs/ardour/beatbox.cc
@@ -421,10 +421,21 @@ BeatBox::get_last_time() const
 	return last_time;
 }
 
+void
+BeatBox::edit_note_number (int old_number, int new_number)
+{
+	for (Events::iterator e = _current_events.begin(); e != _current_events.end(); ++e) {
+		if (((*e)->buf[0] & 0xf0) == MIDI_CMD_NOTE_OFF || ((*e)->buf[0] & 0xf0) == MIDI_CMD_NOTE_ON) {
+			if ((*e)->buf[1] == old_number) {
+				(*e)->buf[1] = new_number;
+			}
+		}
+	}
+}
+
 void
 BeatBox::remove_note (int note, Timecode::BBT_Time at)
 {
-
 }
 
 void