John Stamos Singing 'Under the Sea' From 'The Little Mermaid' Is the Best Way to Start Your Weekend

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John Stamos will be performing in live performances of The Little Mermaid soundtrack this weekend, and to borrow his words, "Oh, it's on!"

The former Grandfathered star teased part of Disney's The Little Mermaid in Concert this week with an Instagram post featuring the cast belting out one of the film's most well-known songs, "Under the Sea."

In addition to Stamos, who plays Chef Louis, the star-studded cast includes Sara Bareilles as Ariel, Rebel Wilson as Ursula, Darren Criss as Prince Eric and Tituss Burgess as Sebastian.

WATCH: 7 Things You Didn't Know About 'The Little Mermaid'

A full orchestra will back the performers when they take the stage at the Hollywood Bowl on Friday and Saturday.

Not to be outdone by her co-star, Wilson Instagrammed her own promotional photo.

"Getting ready for The Little Mermaid Live at the Hollywood Bowl this weekend!" she wrote. "So cool to be rehearsing in the same studio at Sony where Judy Garland recorded The Wizard of Oz!"