Other Minds, the epitome of Left Coast new-music fun, has launched radiOM, an online clearing-house for archival recordings from Other Minds-produced concerts and experimental programs from Berkley’s KPFA radio. (The announcement was timed to coincide with Lou Harrison’s 90th birthday, of course.) As I write, I’m grooving to a 1965 John Cage-David Tudor performance of Christian Wolff’s “For 1, 2, or 3 people, any instruments” recorded at the San Francisco Museum of Art. Hours of entertainment for the whole family—4,500 hours, to be exact. That’s enough listening to get you to Thanksgiving.