Beefs
No documented rap beefs.
Collab
Run-DMC
Collab
Rick Rubin produced key Run-DMC records including Walk This Way.
Produced
Public Enemy
Produced
Rick Rubin produced Yo! Bum Rush the Show and early PE records.
Beastie Boys
Produced
Rick Rubin produced Licensed to Ill. Core Def Jam partnership.
Founded
Def Jam Recordings
Founded
Rick Rubin co-founded Def Jam in Russell Simmons' dorm room.