Input (grade 13): Slipknot is a heavy metal band formed by vocalist and percussionist Anders Colsefni, guitarists Donnie Steele and Josh "Gnar" Brainard, bassist Paul Gray, drummer Joey Jordison and percussionist Shawn Crahan, in Des Moines, Iowa.
Output (grade 10): Slipknot is a heavy metal band from Des Moines, Iowa. The band started in 1995 by vocalist and percussionist Anders Colsefini, guitarists Donnie Steele and Josh "Gnar" Brainard, bassist Paul Gray, drummer Joey Jordison, and percussionist Shawn Crahan.