This is an updated version of the Yamaha Omnichord that I created in Max/MSP. It allows the user to select chords based on all 12 chromatic root notes. In addition to the basic major, minor and 7th chords included on the original my version includes 11 chord types. This version works on any laptop. The user selects the chords on the typing keyboard then swipes the track pad to play arpeggios.