A few months ago, when it was confirmed that Supergirl is moving to The CW, rumors surfaced about a musical crossover between all four of the network's superhero shows. Arrow star Stephen Amell shot down reports of the musical element, but it seems that will actually happen now, albeit on a somewhat smaller scale. Greg Berlanti, who executive produces Arrow, The Flash, Legends of Tomorrow and Supergirl, confirmed this musical episode will be between Supergirl and The Flash.

TV Line reports that this crossover is in addition to the four-part crossover that will involve each show, which will air in late fall. The executive producer teased that he wanted to take advantage of the fact that several stars from both shows boast exceptional singing voices. Here's what Greg Berlanti had to say about this crossover, teasing it will air in the second half of this season.

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"Yes, there will be a musical crossover. There's going to be a musical pair of episodes in the back half of the year between Supergirl and The Flash. We have been talking about trying to write at least one original song per episode. We've toyed with who potentially the villain could be. We'll be careful how we break into song."

The producer also hinted that some of these songs may take place, "in the characters' heads." Both Melissa Benoist and Grant Gustin have showed off their singing skills on episodes of Glee before their superhero roles, while Supergirl's Jeremy Jordan and The Flash's Jesse L. Martin, are also accomplished singers. Jesse L. Martin was one of the original cast members of the Broadway musical sensation Rent. Greg Berlanti also mentioned that Arrow's John Barrowman and Legends of Tomorrow's Victor Garber have musical chops, but we don't know if they'll be used in the crossover.

In related news, it was also announced at the TCA panel that Sharon Leal has been cast as Miss Martian on Supergirl. It was also recently confirmed that Calista Flockhart will be seen in a reduced amount of episodes as a "permanent recurring character," and the executive producers have been discussing what characters could "step up" in the absence of Calista Flockhart's Cat Grant character. Christopher Wood will also return in Season 2 as Mon-El, a superhero from the planet Daxam whose powers are similar to Supergirl's

Executive producer Andrew Kreisberg also teased that they want to enlist actors of color to play new aliens, and it will also be revealed this season that one of the characters "will explore their sexuality." There is speculation that character may be Winn Schott, played by Jeremy Jordan, but it hasn't been confirmed. The Season 2 premiere of Supergirl is set to air on Monday, October 10, with The Flash Season 3 premiere airing Tuesday, October 4. Stay tuned for more on both of these shows as we get closer to their fall premieres.