Mos Def, or Yasiin Bey as he is now known, has unleashed an old track on the interwebs that was produced by Kanye West. "The Light Is Not Afraid Of The Dark" was intended to be on Def's third album, 2006's True Magic. Needless to say, the track didn't make the final cut. Def did, however, perform it for the first time in Chicago last month. Click here to listen.