MOS DEF - BLACK ON BOTH SIDES Vinyl LPBlack on Both Sides is the debut album from Mos Def, released on Rawkus Records. Prior to the album's recording, Mos Def had collaborated with rapper Talib Kweli for the duo's studio album, Mos Def & Talib Kweli Are Black Star. Black on Both Sides features an emphasis on live instrumentation and socially conscious lyrics. Talib Kweli (one half of Black Star with Mos Def), Q Tip and Busta Rhymes are the only main rappers to be featured on the album.