Slipknot is an American nu metal band from Des Moines, Iowa. The group has gone through several line-up changes, but its membership has not changed since 1999: Sid Wilson, Joey Jordison, Paul Gray, Chris Fehn, Jim Root, Craig Jones, Shawn Crahan, Mick Thomson and Corey Taylor.
Slipknot uses a down-tuned guitar set-up (lead, rhythm, and bass guitars), two percussionists in addition to the primary drummer, and electronics (samplers and turntables). The band's sound has been described as "a threshing machine devouring a military drum corps." The band also incorporates diverse vocal styles, typically involving growled vocals, melodic singing and even rapping while the lyrics generally follow a very aggressive tone. The band's musical influences include death metal as well as thrash metal, blues and even hip hop.
Slipknot's roots lie back as far as 1992, and the band formed in November 1995. The band underwent many line-up changes before releasing their highly successful debut album Slipknot in 1999. They have released two other albums, Iowa and Vol. 3: (The Subliminal Verses). Slipknot is expected to release a fourth album in 2008.