One Direction Sings the Alphabet Song on ‘Sesame Street’ (Video)

Liam and Harry help Bert sing the ABCs, a cappella style

After singing all about the letter U, the lads of One Direction are now tackling the rest of the alphabet.

Harry Styles and Liam Payne (sans the other band members) made another appearance on “Sesame Street,” this time joining Bert (sans Ernie) to show off that they, in fact, do know their ABCs, proving it with a rousing a cappella version of the Alphabet Song.

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The boys do seem to get a bit lost toward the end of the alphabet, prompting Bert to wonder whether Liam forgot the lyrics (“I was waiting for you to finish!” the boy bander defends himself) but the puppet saves the day and they finish strong together.