That is so cool. I wish I had one, but I realize that a great deal of what makes that video so cool is that Yuzo Koshiro is playing it :)
Yeah, well put. Sometimes I play his Gen/MD games, and I get really into his compositions. I can sense the way the tracks are separated. Watching him recreate the track real time gives me an even deeper appreciation. In particular, the uniqueness of the track he chose from Bare Knuckle III/Streets of Rage 3. That soundtrack has some real depth.