Jimmy Fallon puts Adam Levine to the test and it’s HILARIOUS!

Jimmy Fallon might be the unparalleled King of Impressions, but he nearly had the title taken off him last night when he challenged Maroon 5 frontman Adam Levine to a sing-off.

The task? Singing kids' songs in the style of a randomly chosen singer, as part of a new game called Wheel of Musical Impressions. Ooh, we can tell this is gonna be good!

Adam started off fairly modestly, telling the audience, "I'm not Jimmy Fallon style, but I can do some things." He then proceeded to sing an impeccable version of Heads, Shoulders, Knees and Toes in the crooning voice of Frank Sinatra. A1, Adam, A1.

Jimmy tried his best to outshine Adam with an Iggy Azalea-style rendition of Old McDonald, but in the end he conceded that Adam was "the champ". We agree!