From 1966 on, they produced what many critics consider to be some of their finest material, including the innovative and widely influential albums  Revolver  (1966),  Sgt. Pepper's Lonely Hearts Club Band  (1967),  The Beatles  (1968), and  Abbey Road  (1969). After their  break-up  in 1970, the ex-Beatles each found success in individual musical careers. Lennon was  murdered