Once Upon a Time Goes Musical!

During Sunday’s highly anticipated musical hour, we learn via flashback that Snow (Ginnifer Goodwin) made a wish upon a star to protect Emma (Jennifer Morrison), resulting in their entire kingdom burning into song, which infuriates the Evil Queen (Lana Parrilla). In Storybrooke, meanwhile, the Black Fairy aims to unleash another curse on the town as Emma and Hook (Colin O’Donoghue) prepare for their wedding.

Once Upon a Time‘s musical episode airs Sunday at 8 p.m. ET on ABC. In the meantime, here’s everything you need to know about the hour, which will feature Emma and Hook’s wedding! Plus: Check out the full track list!