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If you're trying to get to Sesame Street, you only need to go in One Direction.

The British boy band will make a guest appearance as part of the PBS children's show's 45th season this fall. When they do, they'll sing about their favorite letter — "U." As in What Makes U Beautiful, a rewrite of the group's debut hit What Makes You Beautiful. The new version outlines the many words that begin with the vowel.

"This letter's U/You know it's true," Liam Paynesings in a preview of the song posted to YouTubeTuesday. "It starts some words/There are more than a few."

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