robert bunning, specializes in helping arthritis patients. >> i'm in joints friday and joints by nighti play piano at clubs at night. >> reporter: we asked him how good the band . >> we're very good doctors, but we're musicians who just love to play. >> reporter: to gi you an idea how good the band actually is, the guy playing bongos is the original drummerrom the jefferson airplane. and dr. marc schlossberg, a neurologis has played at rnegie hall. ♪ >> music is a tough career. it's a very -- i had a friend whs playing in the san francisco symphony, and we knew each other when we were in high school. i remember when i was 17 and 18, i said, well, i'm prob going to go to medical school. he said, you're taking the easy way out. sist me let me bend, -- >> reporter: dr. john aseff, rehab specialist, notes there's aco healinonent to music. >> well, there's no question that song is important because they trigger emotional responses. sometimes responses that people can't articulate. >> reporter: the band started out playing hospital benefit shows from time to time. now plays about once a mont