A group of L.A. actors — who are also huge Once Upon a Time nerds — made a popular four-episode spoof series entitled Once Upon A…Anonymous last year that aired on YouTube.

But they didn’t stop there.

After a successful crowdfunding campaign, creator Erin “Queenie” Stegeman turned the series into a musical — a rock opera, to be exact.

Once Upon a Time: The Rock Opera will offer fans an exclusive sneak peek at this weekend’s San Diego Comic-Con when they perform 30 minutes of the musical as part of the Marked Men Party, the official party of San Diego Comic-Con 2015. They hit the stage Friday night at 9pm and will host a meet and greet afterwards. You can buy ticket’s to the party here.

OUAT: TOR stars Erin Stegeman (Emma Swan), Ace Marrero (Captain Hook), Katie Cofield (Snow White), Mark Whitten (Prince Charming), Amiee Conn (Regine, the Evil Queen), and Jeremiah Piesert (Cruella DeVil), with music and lyrics by Erin Stegeman and Katie Cofield, composed by Martin Blasick.

You can keep up-to-date on the project by checking out the official website. You can also check out the first season of Once Upon A…Anonymous below.