Editor: Rondo - the unique MIDI player for Mac OS X! Unlike other MIDI players Rondo has been designed to help you follow the music as it plays. Innovative features such as a vertical piano roll with horizontal live playing keyboard and visual track filtering help you Focus on just a part of the melody so you can study or play along. Whether you use Rondo as a serious learning aid or just for fun, you will find its simple and uncluttered interface a delight to use yet powerful enough to get the most out of your music.