The original music released by The KLF, The Justified Ancients of Mu Mu, The Timelords and 2K was written, produced and performed by Jimmy Cauty and Bill Drummond. However, the duo called upon the services of recurring contributors to provide vocals, instrumentation and production support. This was particularly the case for the output of The KLF, who often referred to such contributors as "additional communicators" and, on some "Stadium House" singles, as "The Children of the Revolution".