Before Grant Gustin and Melissa Benoist landed the title roles in The Flash and Supergirl, they got their first big breaks on FOX's musical television series Glee. Benoist played Marley Rose, a sweet and chipper member of William McKinley High School's glee club. While Gustin was a member of the rival Dalton Academy Warblers, playing the snide and openly-gay Sebastian Smythe.
Thought the two musically-trained actors never performed together on Glee, they will in Tuesday's crossover episode. Both will be put into a coma by the melodious menace known as the Music Meister -- who is portrayed by Glee alum and fellow Warbler, Darren Criss -- and will have to sing and dance their way out of the dream world that he has created for them.
Below, check out the "DYNAMIC DUET" poster for the musical crossover event!
DARREN CRISS (“GLEE”) GUEST STARS AS THE MUSIC MEISTER IN THE FLASH AND SUPERGIRL MUSICAL CROSSOVER – Barry (Grant Gustin) and team are surprised when Mon-El (guest star Chris Wood) and Hank Henshaw (guest star David Harewood) arrive on their Earth carrying a comatose Supergirl (guest star Melissa Benoist) who was whammied by the Music Meister (guest star Darren Criss). Unable to wake her up, they turn to Team Flash to save her.
However, the Music Meister surprises The Flash and puts him in a similar coma, one that Team Flash can’t cure. Kara and Barry wake up without their powers in an alternate reality where life is like a musical and the only way to escape is by following the script, complete with singing and dancing, to the end.
Dermott Downs directed the episode with story by Greg Berlanti & Andrew Kreisberg and teleplay by Aaron Helbing & Todd Helbing.
Based on the characters from DC, The Flash is from by Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, with executive producers Greg Berlanti (Arrow, Supergirl), Andrew Kreisberg (Arrow, The Flash), Sarah Schechter (Arrow, DC’s Legends of Tomorrow) and Aaron and Todd Helbing.
"Duet" episode of The Flash will air Tuesday, March 21 at 8 p.m. ET/PT.