RadioDef Jam Co-Founders Rick Rubin & Russell Simmons SpeakDigital and Radio FactsSeptember 23, 2011April 9, 2026 by Digital and Radio FactsSeptember 23, 2011April 9, 2026010 Def Jam co-founders Rick Rubin and Russell Simmons make rare joint appearance at NYC library to celebrate 25 years of the iconic hip-hop label....
