Masterminded by Bill Drummond and Jimmy Cauty, the KLF was the ultimate evolution of the British pair's partnership (they previously worked as the more hip-hop-oriented Justified Ancients of Mu Mu and the Timelords). Their seminal early-'90s recordings incorporated hip-hop influences and sampling techniques to help codify both acid house (on the WHITE ROOM album) and ambient/trance (on the milestone CHILL OUT). Drummond and Cauty didn't stick around long after their trailblazing work, though, disbanding the KLF in 1992.