Kings of Chaos are a hard rock supergroup with international membership featuring a core lineup of drummer Matt Sorum, bassist Duff McKagan, and guitarist Gilby Clarke, as well as a revolving appearances from members of Def Leppard, Deep Purple, Aerosmith and more. The group plays songs from all of these bands, and other classic rock covers. To date, they have only recorded and released one song, "Never Before", on the Deep Purple tribute, Re-Machined: A Tribute to Deep Purple's Machine Head.