When played forwards, Michael Jackson's "Beat It" doesn't sound too out of the ordinary.

(Click on the radio to hear the "Beat It" segment played as it normally sounds)

But when played backwards, some people hear "I do believe it was Satan in me."

(Click on this radio to hear the "Beat It" segment played backwards. It sounds a little like a CD skipping, but this is completely normal; this is just how it sounds when played backwards.)