This really interests me, being a musician as well. The idea of coding music (and not just programming a synth or whatever) has never occurred to me before and I really fancy spending an evening or two with this to see what happens.

My only dislike with increasingly virtual instruments, however, is that I don't really get the same sort of involvement out of using them. I can bang out some fairly decent beats with my PadKontrol but it makes me long for my old, battered drum kit, and the band practices where I'd lay down a beat and just let myself get lost in it all as the guitarists and bassist improvised over it.

What you gain in technology (and all the amazing things you can do with it) you lose in that sense of physicality.