An 8 bank, 8 track, 16 step MIDI sequencer for sequencing external hardware and recording return audio for Mac and Windows. THIS… An 8 bank, 8 track, 16 step MIDI sequencer for sequencing external hardware and recording return audio for Mac and Windows. THIS APP DOES NOT PRODUCE ANY SOUND React App, turned Chrome extension powered by the WebMidi.js library, Web MIDI and Web Audio. .9 - 1.0 changel