Disturbed is an American heavy metal band from Chicago, formed in 1994. The band includes guitarist Dan Donegan, drummer Mike Wengren, lead vocalist David Draiman and bassist John Moyer. Donegan and Wengren have been involved in the band since its inception, with Draiman replacing original lead vocalist Erich Awalt in 1996 and Moyer replacing original bassist Steve "Fuzz" Kmak in 2004.