They Came from Outer Space: The Alien Songbook is a Dr. Demento compilation which includes "Slime Creatures from Outer Space" performed by Weird Al Yankovic, "The Flying Saucer, Parts 1 & 2" by Bill Buchanan and Dickie Goodman, "The Purple People Eater" by Sheb Wooley, "Spaceman" by Harry Nilsson, "Calling Occupants of Interplanetary Craft" by Klaatu, "The Ballad of William Robinson" by Billy Mumy, and other similarly spacey songs.