The Dog's Breakfast
A parody of overly long prog rock instrumentals from the track "Roger Raps with Sid About: The Art Rock Suite" on National Lampoon's Goodbye Pop 1952–1976 album (1975).
Sid Gormless (Christopher Guest) is the leader. This is their 14th album.
Spinal Tap's Christopher Guest co-wrote it. "Dog's breakfast" is slang for a mess.