Kingdom of Sorrow is an American sludge metal band that features Kirk Windstein of Crowbar and Down, along with Jamey Jasta of Hatebreed.

Stephen Thadeus Crompton Gibb is a British-American guitarist. He has been a member of numerous hard rock and metal bands including 58, Black Label Society, Crowbar, Kingdom of Sorrow, The Underbellys, SkilletHead, and Saigon Kick. He is the son of Barry Gibb and is currently playing guitar as part of his father's band.