Fantastic presentation. Very original idea. It does in some ways play like a normal platformer with the most complicated moving and jumping controls ever, but once you get to the levels with the hands, you start having to use more strategy, and really start to understand how each knob and button works.
Never thought I'd be playing a platformer in a similar way to programming a synth. Also the jumping controls were the most confusing, though it was definitely nice to have a picture. Even so, except on the last level where you had to use it, I didn't really understand what frequency was.
It would be interesting to see how this kind of idea could be adapted in a way that's less Byzantine in control, and more accessible. I really like the idea of messing with player constants like gravitaton constants, acceleration, etc though.