NewsRap Status News Russell Simmons Finally Reveals Why Rick Rubin Left Def Jam [VIDEO] by Professor X May 2, 2016 by Professor X May 2, 2016 Out of all the major break-ups in Hip-Hop from the Fat Boys to Roc-A-Fella, one of the most crucial ones was the split between Russell Simmons and Rick Rubin, the co-founders of Def… 0 FacebookTwitterPinterestEmail