Jimmy Fallon & Billy Joel Sing Doo Wop (VIDEO)

12/14/2012 11:17 am 11:17:09 | Updated Feb 13, 2013

Jimmy Fallon may be known for his song parodies, but sometimes the "Late Night" host enjoys just showing off his chops the regular way.

Thursday night's guest was Billy Joel, and the two had a little fun with an impromptu doo-wop duet.

Check out the full clip above.

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