# but it's also unclear where else it would be.
preview: { note_number: 27 }
preview_enabled: { note_number: 27 }
+
+# The slider (pitch bend) is mapped to master speed.
+master_speed: { controller_number: 128 }
+
+# Master speed lock is mapped to lock.
+toggle_lock: { note_number: 25 }
+locked: { note_number: 25 }