I'm just listening to what I think is the orignal In C by Terry Riley and I happened to pick up the last Wire magazine and read the Invisible Jukebox with Makoto Kawabata. In it one of the pieces is Terry Rilery/L'infonie/Walter Boudreau clled In C (Mantra). Kawabata talks about his version he did live and how half the audience just left. That sounds pretty interesting. I'm going to search out these two versions, any other versions I should check out?