Nothing divides the world quite like Yes music. For the fans it's a sublime journey into melody form. For the critics it's an abominable noise. This is the long awaited critical review of the music of Yes during the crucial first five years of the band's history. Using rare archive film we trace the development of the band from it's first album through to the controversy surrounding the release of Topographic Oceans and the departure Rick Wakeman. Featuring in depth interviews with the band and archive footage of performances of material from every album a leading team of critics and musicologists critically assess the music to discover the essence of Yes and the reason for the band's phenomenal success. To ensure editorial control, the film is totally unauthorised and has not been approved by Yes, nor has it been authorised or approved by past or present management of the band.