Thanks to time travel and dimension hopping being a regular fixture on The Flash, Barry Allen and his friends have had a lot of wild adventures. That ability to traverse the Multiverse has also allowed Supergirl to be brought into the fold of the other Arrowverse shows, leading to multiple team-ups between the Girl of Steel and the Scarlet Speedster. Ever since last year's crossover between the two shows, fans have been hoping to see the Glee alumni join forces again. In honor of their shared musical history, we've know for awhile that their next adventure together would involve a lot of singing and dancing.

Thanks to a number of promos we've learned about the details about The Flash/Supergirl musical crossover, found out how the villainous Music Meister will look, and gotten our first trailer for the upcoming special. Set in an alternate reality created by the Music Meister, the conceit will not only let many of the two shows' actors play different roles, but all the sets and costumes get to shine with plenty of 1940s glitz and glamour.

The CW has released a new batch of photos that put a spotlight on the spectacle and fashion that will be on display in the upcoming episode, titled 'Duet'. Check them out in the gallery below.

[vn_gallery name="Supergirl/Flash ‘Duet’ Episode Images" id="924439"]

The deviation from the ongoing plots on both Supergirl and The Flash will be a fun one, and it will hopefully be a much-needed vacation for both heroes. For Flash's part, he's got a lot on his plate. He's currently dealing with the machinations of Savitar, one of many speedsters faster than Barry. Thanks to the villain, he spent this week traversing the Speed Force in an effort to rescue Wally. In the near future, he'll also have to compete with time-traveler Abra Kadabra. With so much darkness on the horizon, many fans are ready for a light and fun crossover.

Supergirl, meanwhile, has problems of her own involving her signature extraterrestrial problems. Those alien issues will mean viewers will get to see the return of Lynda Carter to the show and the proper debut of Teri Hatcher, one of the many Super-alums on the show. Assuming the upcoming musical episode is a hit, the producers of the Arrowverse already have plans for a sequel. If Oliver Queen doesn't get a his own musical number, it'll be a travesty.

Supergirl continues with ‘Star-Crossed’ on Monday, March 20 at 8 p.m. EST, followed by The Flash on Tuesday, March 21 in the same time slot with ‘Duet’.

Source: The CW