Kooper turns 60 years old on Feb. 5. A benefit concert celebrating the event is set for the Berklee Performance Center in Boston on Jan. 31. Kooper helped popularize the Hammond B3 organ as part of rock music, performing on recordings of Bob Dylan, Jimi Hendrix, The Rolling Stones and The Who. He was a member of the legendary Blues Project, and later founded the group Blood Sweat & Tears. His autobiography is Backstage Passes & Backstabbing Bastards: Memoirs of a Rock 'n' Roll Survivor (Republished in 1998).