Peter, Shaun and Tim compare and contrast the two classic prog rock double albums: The Lamb Lies Down On Broadway by Genesis and Tales From Topographic Oceans by Yes. The discussion includes: why the bands decided to do double albums at this point; the role of jamming on both albums; the religious character of the two themes; and who’s better: Roger Dean or Hipgnosis? Also, are Jon Anderson’s words wonderful or terrible? Was The Lamb based on The TV show The Prisoner? Why did Alan White play a tree? Who was Lilith? And is Shaun using a microphone or a telescope?