Sounds like the guy demoing it hired a monkey to randomly hit buttons on a cheap Casio keyboard with no frame of reference whatsoever. This might be a really cool project but based on the demonstration the guy in the video did, I have no idea.
Bonk! Bonk! Pause! Zap! Bonk! Random-sample-guitar-bend! Pause! Bonk! High pitched noise!
It's like demonstrating how a guitar sounds by recording yourself dropping it on the floor... (which, now that I mention it, I'm sure someone somewhere has done).
Again,
looks like a cool project, and I can guess at what it is supposed to do (tape loop), I just wish the guy in the video was at all interested in showing off what it does (unless "Bonk! Pause! Zap! Bonk! Random-sample-guitar-bend!" is actually what it does, in which case I'll pass, heh). I was listening for an example of some sort of delay but I really have no idea if that actually happened or not.