King Crimson are an English rock band formed in London in 1968. The band have undergone numerous formations throughout its history, of which 18 musicians have been full time members including 3 lyricists; since 2013 it has consisted of Robert Fripp, Jakko Jakszyk, Tony Levin, Mel Collins, Pat Mastelotto, Gavin Harrison and Bill Rieflin. Fripp is the only consistent member of the group, and is considered their leader and motive force. The band's lack of mainstream success have earned them a large cult following.