Executive producer of The Flash and Supergirl Greg Berlanti, has confirmed that officially there’s going to be a musical crossover episode between the two television series next season, which will feature the talents of Melissa Benoist and Grant Gustin, both of whom are Glee alumni and great singers.
Along with cast mates, Jeremy Jordan of Supergirl and Jesse L. Martin of The Flash.
“Yes, there will be a musical crossover,” executive producer Greg Berlanti said. “There’s going to be a musical pair of episodes in the back half of the year between Supergirl and The Flash.”
We got a little taste of what a musical episode would be like, back when Grant Gustin as Barry Allen song a bit of “Summer Nights” in an episode of season one.