So, I got most of his recorded stuff (including several recordings of the same pieces)- haven't checked how close to his whole recorded output, though I wouldn't be surprised if it's close to it.
I relistened to a few that I listened to a few years ago, such as the "concertos", and the 1st String Quartet, but my favorites so far are the ones that I listened to for the first time, such as For Christian Wolff and Neither. What should I listen to next if I like these?...
(or would it be impossible not to say "all of them!"?)
