The CW's DC TV shows continue to garner fans as the network utilizes its many DC characters in more and more interesting ways. A grand crossover between all of The CW's DC heroes entertained countless followers and garnered some of the network's best ratings ever, last year. Now, The CW hopes to recreate that success -- albeit with a little more panache -- before the spring seasons wrap up. A grand musical crossover between Supergirl and The Flash is in the works, and it's slated to air in late March.

The crossover, which will be a two-day event spanning episodes from both shows, is already shaping up to be an excellent episode for theater and superhero geeks alike. With additional Glee alum Darren Criss portraying the villainous Music Meister and original songs by Rachel Bloom and La La Land songwriters Benj Pasek and Justin Paul (also of Smash fame), the crossover should at least be an entertaining watch for DC TV fans. According to one Supergirl actor, the arc was just as much fun to film as it should be to watch, too.

David Harewood, who plays J'onn J'onzz/Martian Manhunter on Supergirl, opened up to Comic Book about the musical crossover episode in an interview. He said:

"I think the crossover itself is going to be highly entertaining. And Melissa [Benoist] and Grant [Gustin] have such great voices. I think it’s going to be a pretty standout episode, so I’m very much looking forward to it."

The actor is especially excited to finally make his debut on The Flash:

"It’s a good show that has been on my radar for some time. And I know it’s got a great fan base...I haven’t been in the previous two crossovers. I think comic book fans will really enjoy seeing Martian Manhunter and The Flash on the same screen."

Harewood even took to Twitter to post about filming the crossover episode of The Flash last week -- check out the teasing tweet, featuring a photo of his script, below.

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While this tweet features some odd blurring choices -- we know that the episode of The Flash is already called "Duet" -- it's definitely exciting to know that production on the crossover is well underway. Harewood's character will not sing in the episode, but it will feature the talents of heroes Melissa Benoist and Grant Gustin, as well as Broadway alum Jeremy Jordan and select Legends of Tomorrow and The Flash cast members. Musical episodes have lived on in fandom history for other shows, most notably Buffy the Vampire Slayer, which used the same "villain-makes-everyone-sing" mechanic to produce its melodious protagonists.

In a season that's hit somewhat of a lull after introducing (yet another) love triangle this week, it's especially comforting for Supergirl fans to know that this highly-anticipated musical is just around the corner. Coupled with the exciting news of an upcoming Luthor-centric episode, this crossover is sure to give the show the extra pizzazz it needs to secure a standout sophomore season.

Much like David Harewood, we couldn't be more pumped for this crossover if we tried. Now, as the old song goes, waiting is the hardest part.

NEXT: Supergirl/Flash Musical Crossover Song Details

Supergirl continues Monday, February 6th, with ‘The Martian Chronicles’ at 8pm on The CW. The Flash continues Tuesday, February 7th, with 'Untouchable' at 8pm on The CW.

Source: Comic Book