Fallon, Billy Joel sing 'Beast of Burden' & 'The Longest Time'

DETROIT – Billy Joel made an appearance on the Tonight Show with Jimmy Fallon Wednesday, and the result was beautiful music. 

Fallon and Joel, along with The Roots, performed a great rendition of the Rolling Stones classic, "Beast of Burden," with Fallon showing off some of his Mick Jagger impression.

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They duo, along with Joel's band members and Detroit's J.K. Simmons, who was also on the show Wednesday, performed an unrehearsed doo-wop performance of "The Longest Time" by Billy Joel.