photo: CBS

At long last, "The Flash" and "Supergirl" fans will see their ultimate dream realized: a musical crossover.

On Thursday (August 11) at the CW's TCA panel, DC TV universe producer Greg Berlanti confirmed that yes, Grant Gustin and Melissa Benoist will get to relive their time on "Glee" together by singing together once again in 2017. The two-episode crossover will most likely take place inside the mind of one of the characters, and will consist of pre-existing songs rather than new ones written for the series.

Musical episodes aren't anything new, of course, but fans of both shows have been longing for such a spectacle since "The Flash" first premiered on television two years ago. And why wouldn't they? After all, Grant's an amazing singer:

As is Melissa:

Plus, Jesse Martin is a Broadway legend:

And the entire cast of "The Flash" is perfect at harmonizing with one another:

One can only hope they'll put out a soundtrack once the episodes air next season — with all the talent on both of these shows, it's sure to be a best-seller.