After months of fans clamoring for it, and after even more months of speculation, the Flash/Supergirl crossover is less than a week away! The CW has released a brand new trailer for the show, which follows the extremely brief teaser from a few days ago. You can check out the trailer below:
The episode features the fan-favorite character, Music Meister (played by Darren Criss), as well as the arrival of a few fan-favorite characters from Earth-S. The Flash's seventeenth episode of the third season, titled "Duet", airs on the Tuesday, 21st March on The CW.