The Flash and Supergirl musical crossover “Duet” airs Tuesday at 8/7c on The CW.
Check out the stars of The Flash and Supergirl casts’ best musical moments below!
And if you’re wondering why Danielle Panabaker isn’t singing in the musical crossover, look no further than this clip from an old episode of The Flash.
No matter how much we love Jeremy Jordan on Supergirl, he will always be Jack Kelly from Broadway’s Newsies.