'Supergirl' Confirms 'Flash' Musical Crossover, Miss Martian
Come on, sooner or later, someone had to use those pipes. With the addition of Supergirl to the Arrow-verse, musical fans practically had bingo of amazing singers sharing the screen, and The CW will finally reward us for it. Not only will Supergirl and The Flash have a two-episode musical crossover of their very own, we’ll also meet Miss Martian this season.