UMI Says Provided to YouTube by Universal Music Group UMI Says · Mos Def Black On Both Sides ℗ 1999 Rawkus Entertainment LLC Released on: 1999-01-01 Producer: Mos Def Producer: David Kennedy Associated Performer, Guitar: will.i.am Associated Performer, Hammond Organ: Weldon Irvine Composer Lyricist: Dante Smith Auto-generated by YouTube. source ,