Seeing as we could all use something lighter to think about, Supergirl and The Flash are officially reporting for rehearsal of their big musical crossover. Not only has The CW set a late March debut for the showstopping two-part event, but we also know which Arrow-verse stars will flex their pipes.

Even as the Music Meister has yet to be cast, The CW confirms that the two-part “Duet” will begin in the latter half of the March 20 Supergirl episode (akin to how Supergirl very quickly began the “Invasion!”), before fully starting the show in The Flash’s March 21 “Duet.”

As to who we can expect singing a mix of new and original songs, there’s Grant Gustin, Melissa Benoist, Jesse L. Martin, Carlos Valdes and Jeremy Jordan, along with Legends of Tomorrow stars Victor Garber and John Barrowman. Supergirl cast David Harewood and Chris Wood will also appear in non-singing roles, but you can get a good sense of the whole cast’s musical prowess here.

Dermott Downs will direct the episode, while executive producer Berlanti said earlier in 2016 they’d only just begun the process of clearing music and drafting original songs, and approaching “someone we’re really excited about.”

There’s plenty more Supergirl and Flash in the meantime, so stay tuned for casting on the Music Meister, and further details of the upcoming “Duet.”

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