JON HAMMOND Instruments: Organ, Accordion, Piano, Guitar Attended: Berklee College of Music 1974, City College San Francisco Languages: English, German Musician: Jon Hammond is one of the premier B3 PLAYERS in the world. Jon has played professionally since age 12. Beginning as a solo accordionist, he later played Hammond B3 organ in a number of important San Francisco bands. Member AFM Local 6, Local 802, ASCAP