Melissa Benoist get into character while filming new scenes for her hit show "Supergirl" with special guest Grant Gustin as Flash for the special episode. Calista Flockhart was also seen on set in Los Angeles and was being saved by the 2 heroes as she gets hassled by 2 villains. Featuring: Melissa Benoist, Grant Gustin Where: Los Angeles, California, United States When: 23 Feb 2016 Credit: Cousart/JFXimages/WENN.com **Not avialable for publication in New Zealand and Australia**

The ‘Flash’ & ‘Supergirl’ Musical Crossover Gets Premiere Date

Last summer, the CW confirmed a musical crossover between two of its hit shows: The Flash and Supergirl. Now after months of waiting for details about the crossover, we finally get an air date!

The episode, appropriately titled “Duet” will begin on March 20th during Supergirl and then continue onto The Flash on March 21st. This format is similar to the “Invasion!” episode with The Flash, SupergirlArrow, and Legends of Tomorrow that aired in November.

EW previously reported that the villain for the crossover will be the Music Meister, as seen on the animated series Batman: The Brave and the Bold. The Music Meister has the power to control his victims through song. Although Neil Patrick Harris voiced him in the animated series, it hasn’t been confirmed who will be playing the role for the live-action version.

The “Music Meister” as seen on the animated series ‘Batman: The Brave and the Bold’

Dermott Downs will direct the episode, which will include musical performances by Glee alumni Grant Gustin and Melissa Benoist, as well as other actors from the “Arrowverse”: Jesse L. Martin (The Flash) , Victor Garber (Legends of Tomorrow, The Flash), Carlos Valdes (The Flash), Jeremy Jordan (Supergirl) and John Barrowman (Arrow, Legends of Tomorrow). Supergirl‘s David Harewood and Chris Wood will make non-singing appearances.

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Cover Photo Credits: Cousart/JFXimages/WENN.com

Written by Michele Mendez

Michele Mendez is an editor at CelebMix.com, where she covers all things pop culture, including entertainment, music, television, and film. In her free time, you can find her analyzing BTS' music videos or watching yet another series on Netflix. #ARMY Have a story idea? Contact: michele@celebmix.com / michelemendez182@gmail.com TWITTER, INSTAGRAM, & FACEBOOK: @michmendezmedia