Slipknot is an American band from Des Moines, Iowa. Slipknot consists of nine members, the current band members are Sid Wilson, Joey Jordison, Paul Gray, Chris Fehn, Jim Root, Craig Jones, Shawn Crahan, Mick Thomson, and Corey Taylor. The band’s line-up has remained unchanged since 1999. Each member of the band wears a unique mask. Slipknot formed in 1995 and underwent several line-up changes following the independent release of Mate. Feed. Kill. Repeat. in 1996. Their self-titled debut studio album was released in 1999 and was followed by Iowa in 2001 and Vol. 3: (The Subliminal Verses) in 2004. On August 25, 2008, the band returned to release their fourth studio album, All Hope Is Gone, which debuted at the top spot on the Billboard 200 charts. The band has released three DVDs including 2002’s Disasterpieces, which was certified quadruple-platinum in the United States.