That sounds a bit complicated since Barry went back to change time by saving his mother. Which means he never meets Kara at all. But in previous reports, The Flash season 3’s story arc on Flashpoint will not last long. So it is a possibility that in the middle or nearing the end of the season, Barry’s story crosses over an episode of Supergirl season 2.
But the exciting part about this crossover is that it is going to be a musical, cites Blastr. A musical extravaganza is going to take place with lots of singing and dancing. Which also means Supergirl and The Flash is going to sing and dance. The crossover episode is set to premiere in the fall. …show more content…
In fact, they are working on writing one original song per episode. Since this is a musical, they are also figuring out the potential singing villain. “We’ll be careful how we break into song,” says Berlanti. Speculations surrounding the musical villain point to Niel Patrick Harris taking the role.
The two-part musical event is something Berlanti wants to produce. After already writing the fall crossovers, the show runners are figuring out how to place them. “And we’re doing it across three shows!” exclaims Berlanti. Does he mean he is linking Arrow into this musical bonanza too? Can you imagine Stephen Amell breaking into a song?
The crossover with the Arrowverse is not yet official. What is clear so far is that Grant Gustin and Melissa Benoist is going to sing and dance. After all, both actors did have a stunt on Glee before. In addition to this musical feature, speculations point to Joss Whedon directing the special