Disturbed is an American rock band from Chicago, Illinois, formed in 1996 when musicians Dan Donegan, Steve "Fuzz" Kmak, and Mike Wengren hired singer David Draiman. Since the band's formation, they have sold over 11 million albums worldwide and released three consecutive number-one studio albums, making them one of the most successful rock bands in recent years. Only five other rock bands have had three consecutive studio albums reach number-one in their first week of release: Van Halen, Staind, U2, Metallica, and System of a Down (excluding Steal This Album!).