Born Jason Mizell, he was known as the DJ and producer of the influential 1980s hip-hop group Run-D.M.C.
He picked up his first musical instrumental, a trumpet, at age three.
He was murdered in a New York recording studio in 2002.
He fathered three sons with wife Terri Corley-Mizell.
He was the longtime partner of Joseph Simmons in Run-D.M.C..