The Pocket Piano MIDI has all the functionality of a Critter & Guitari Pocket Piano synthesizer, now with MIDI capabilities! It can interact with many other MIDI devices: drum machines, sequencers, computers, synthesizers, and other Pocket Piano MIDIs. It is both a sound module and a controller, sending and receiving MIDI note messages, and MIDI clock signals.
As a controller, the Pocket Piano MIDI sends out key presses as note messages, useful for triggering other synthesizers, samplers, or software. As a sound module the Pocket Piano MIDI responds to all 88 notes of a full size piano, so you are not limited to the 16 key range of the Pocket Piano. Using a full size controller, you can take advantage of the Pocket Pianos unique sounds and arpeggiators over a much larger range. Larger range = more fun !