Slipknot is an American heavy metal band from Des Moines, Iowa. Formed in September 1995, the group was founded by percussionist Shawn Crahan and bassist Paul Gray. After several line-up changes in their early years, the band settled on nine members for more than a decade: Corey Taylor, Mick Thomson, Jim Root, Paul Gray, Craig Jones, Sid Wilson, Shawn Crahan, Chris Fehn and Joey Jordison. More: en.wikipedia.org.