Many people think they recognize one of the main voices in Harry Nilsson's "The Flying Saucer Song" as Joe Cocker. But, the main voices are all Nilsson using three distinct voice inflections. The gruff background vocals, however, are provided by Joe Cocker, whose coarse delivery is similar to Nilsson's.
"I don't think there's that much of a similarity," says Harry, "It's just that we both can occasionally muster up a brandy tone. We're whiskey-throated tenors. The Orson Welles type of guy from Citizen Kane.".
-  Circus, A. J. Morgan (1975-10) "Nilsson - Dracula meets the Sandman" (Number: 120)