Uncontrolled Substance is the solo debut album by rapper, and Wu-Tang Clan member Inspectah Deck. The album was released on September 7, 1999 under Loud Records. Originally slated for release in 1995, the record was indefinitely postponed after a flood destroyed over 100 beats in RZA's basement, including his original productions for the album. Eventually released four years later, Uncontrolled Substance received mostly positive reviews, and is Inspectah Deck's most critically acclaimed album to date. The album features Wu-Tang mainstays U-God and Masta Killa, and appearances from lesser-known affiliates Street Life, Killa Sin, and LA the Darkman. A music video was made for the songs "Word on the Street" directed by Gregory Dark & "Show 'N' Prove" directed by Joseph Kahn. The album's liner notes state that it is dedicated to Inspectah Deck's late father, Frank Hunter.