Stevie Wonder Joins Hotel Lobby Guitarist for Rendition of “Superstition”

Grayson Erhard started playing an acoustic cover of "Superstition" in the lobby of the Marriott in Anaheim, California. He had to apologize, because he didn't know the words to the second verse.

That's when a man in the crowd volunteered to help sing, that man is Stevie Wonder. The whole performance is pretty great to watch: