Played bass and drums in several garage bands prior to joining
Run-D.M.C.; on all of their albums from Raising Hell on, he played
keyboards, bass, and live drums in addition to his turntable
work.
His sons' Jason Mizell Jr. (DJ Jam Master J'Son) and T.J. Mizell (DJ Dasmatic) are both professional Disc Jockeys. They perform with Run D.M.C. as disc jockeys whenever Rev Run and Dmc performs shows. Each of his sons have performed at venues around the world, and made several television appearances on various television networks.
Former owner of JMJ Records, former label of the hip-hop groups Onyx
and The Afros.