One of the original turntablists, J Rocc founded the Beat Junkies in 1992 with Melo-D and Rhettmatic, but has done just as much on his own as in a group setting. He began DJing in the mid-'80s with a California group named PSK. Soon after forming, the Beat Junkies became a seminal force in the rise of instrumental hip-hop, including core member Babu plus future stars Shortkut and D-Styles.

In addition to numerous mixtapes and his own production for Stones Throw releases, J Rocc has been the DJ for Madlib's live shows since the early 2000's, was the 3rd member of Jaylib (Madlib & J Dilla) during the group's live events, and collaborated with Madlib on Beat Konducta Vol. 5-6: A Tribute to J Dilla.