Looks to have similar function to the Synthax from the 80's. Only a couple players made use of that thing - Allan Holdsworth being one and then the percussionist for the Bela Fleck and the Flecktones group. That guy just used it as a midi controller to trigger percussion samples for the most part.

However this thing has a sample playback engine in it which sounds pretty decent in my opinion. $219 seems pretty cheap actually if it's got decent tracking.