This rare promo CD contains the remix of "Untouchable," which is renamed "What Cha Can Prove." While the album version (track 1) is an absolute classic, the remix was the version used for the video. Produced by Dr. Dre and Eazy-E, the "Untouchable" remix is essential for anyone into early gangsta rap. The song hit number one on Billboard's Hot Rap Singles chart, and it's taken from the classic album "Livin' Like Hustlers."