1) Musical Two-Part Special With Supergirl

Here’s something that proves The Flash is nothing if not good to its fans. Season 3 will not only feature the aforementioned four-way crossover, a separate team-up will also occur between the Scarlet Speedster and Supergirl. And get this: it will be a musical!
Spread across two episodes (one from each show), the musical crossover will apparently feature “mostly pre-existing songs”, though co-creator Greg Berlanti hopes to get at least one original piece in each episode.
This is music to the ears (literally) of anyone who has been hoping for this exact thing to happen since Berlanti cast two Glee alumni as his leads. Even more exciting is the rumour going around that The Avengers’ Joss Whedon will be directing the episodes.
Even if that isn’t true, we definitely have enough treats coming up on The Flash to keep us going.
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