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 / Updated  / Source: TODAY
By Ree Hines

She back! Hit maker Meghan Trainor, who's brought some great performances to TODAY in the past, returned to show off some new moves for our Citi Concert Series.

The singer-songwriter had a treat for her fans Thursday morning — and for "Peanuts" fans.

Trainor performed her newest single, "Better When I'm Dancin'," from "The Peanuts Movie" soundtrack.

"I wrote it in a short amount of time on my ukulele on the tour bus," she explained about how the tune came to her.

The opportunity to write and sing for the new film based on the beloved classic characters is "a big deal," she said. "It's an honor."

And we're honored that she shared her performance with us!

"The Peanuts Movie" opens in theaters nationwide Friday.

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