Unlike audio clips, existing MIDI clips are never overwritten even though MIDI data within clips can be overwritten. When MIDI Merge mode is disabled and recording MIDI on a track with existing clips, newly recorded MIDI data overwrites existing MIDI data within existing clips, but the existing clip boundaries remain. New MIDI clips are only created to fill the gaps between existing MIDI clip boundaries. Typically, new MIDI clips are always created on barlines. However, if existing clip boundaries are not on barlines, newly created clips are bound by the existing clips.