Last night on the Tonight Show, Jimmy Fallon's Guest was Billy Joel!!!

Jimmy Fallon totally gets it! He didn't just have Billy Joel on as a musical guest. He made an "event" out of his appearance.

Jimmy sat down with Billy Joel at the piano and they did a duet of the Rolling Stones "Beast of Burden" which was fantastic

Then during the commercial break, they went into a spontaneous version of Billy Joel's doo-wop song  "The Longest Time" with Jimmy Fallon, actor J.K Simmons and Billy's Band. So cool!

And then, Billy Joel performed one my all time favorite songs "Scenes from an Italian Restaurant