Thanks for that link. This is the approach I've been interested in for a long time, it has the ability to play things that a human never could (the size of and number of fingers on the human hand limit the chords you can achieve). But it's pretty decisively the machine playing there. The human participation element in the MIT version is a very interesting addition.

I think a combination of their software and body-side mechanics with the Russian fretboard apparatus could do some really interesting things sonically. But it would still be less fun to play than the MIT guitar in its current form.