Steve Zak Photography/FilmMagic
August 27, 2015 at 12:40 PM EDT

Serena Williams has got the spirit, and you’ve got to hear it.

During a karaoke night sponsored by Delta Air Lines ahead of the U.S. Open, the tennis star chose to sing “Under the Sea” from The Little Mermaid — albeit without a hot crustacean band, but with the original dance moves. She told the AP she wanted to kick back before the tournament begins Aug. 31, when she’ll be vying for her fifth straight major title, as well as a calendar Grand Slam.

“We just kind of wanted to celebrate just kicking off [the] U.S. Open and having fun and relaxing and enjoying it,” she said. “I always get so nervous every year like, ‘I don’t know what to do, I don’t know what to do.'”

Her rendition of the Disney classic isn’t the first time Williams has performed. In July, she appeared in the HBO tennis mockumentary 7 Days in Hell, alongside Andy Samberg and Kit Harington, and in March, Williams recreated Beyoncé’s “7/11” video on a tennis court:

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