Well, this will be a LEGENDARY performance!
As everyone may know, John Legend often gets told he looks like the cartoon Arthur.
He gets trolled the most from his wife, Chrissy Teigen... of course it's all out of love!
Often on social media, Teigen makes comments about how her husband looks like Arthur the Aardvark.
While visiting Jimmy Fallon on The Tonight Show to discuss his new Christmas album, he admitted that he'll cover the PBS show's theme song one day.
Watch the video below for the rest of the interview!