Jimmy Fallon and Julianne Moore Compete Playing Random Instruments (VIDEO)

Jimmy Fallon loves to play games with his celebrity guests on 'Late Night' (Weeknights, 12:37AM ET on NBC), but the one he came up with for Julianne Moore was certainly one of the more challenging.

They had to randomly pick instruments to play in the hopes that someone could guess what song they were playing. In this we learned that Moore cannot get a recognizable song of any kind out of a trombone, while Fallon was only marginally better on the cello.

Fallon, though, absolutely nailed 'Twinkle, Twinkle Little Star' on the harmonica, and still Chris Kattan could not figure out what it was. Oh sure, he knew the tune but he couldn't come up with even a part of the name in 30 seconds. Probably, it was on the tip of his tongue driving him just as crazy as it was Fallon. How often do we really hear that tune?