Warner Bros. has sent out a new press release for Supergirl, and one behind-the-scenes detail stands out more than anything else: Claudia Sarne is now listed as the film’s composer.
That means Supergirl has undergone yet another musical change, making Sarne the third composer tied to the movie.
Ramin Djawadi had previously been reported for the project, and Tom Holkenborg was later linked as well, before this latest Warner Bros. update put Sarne in the role.
Sarne is known for composing The Book of Eli, Días de gracia, End of Watch, and Triple 9. She’s also worked in the music department on twenty-six episodes of Animal Kingdom.
Warner Bros. quietly confirms another change
The studio’s new synopsis again confirms Milly Alcock stars as Kara Zor-El in what sounds like a much darker and more revenge-driven DC movie than the usual bright and hopeful Superman setup.
According to the official description, Kara is pulled into “an epic, interstellar journey of vengeance and justice” after a ruthless adversary strikes close to home.
The cast also includes Matthias Schoenaerts, Eve Ridley, David Krumholtz, Emily Beecham, and Jason Momoa.
What jumps out is the addition of Claudia Sarne in the official credits. Composer swaps this late in the game usually get attention, especially with a movie this close to release. It suggests Warner Bros. and DC Studios are still fine-tuning the tone of the film as it heads toward theaters.
Third composer raises questions
A third composer is not a small thing. Music is one of the biggest parts of a superhero movie’s identity, especially for a character like Supergirl, who is supposed to help shape the future of the DCU on the big screen.
Changing composers once can happen for any number of reasons. Doing it three times points to a movie still being adjusted behind the scenes, or at least a studio still looking for the right sound.
Whether this is a minor creative shift or something bigger remains to be seen, but fans are obviously going to notice.
It also adds to the talk already surrounding Supergirl, which has been one of DC’s more closely watched projects because of Milly Alcock’s debut, Jason Momoa’s arrival as Lobo, and the pressure on the film to follow Superman in Gunn and Safran’s new DC universe, especially with the sale of WBD to Paramount Skydance.
Industry insiders are already describing the flick as a red flag and a pricey risk.
Claudia Sarne now officially listed
Sarne is now named in the press release alongside director Craig Gillespie, writer Ana Nogueira, cinematographer Rob Hardy, editor Tatiana S. Riegel, costume designers Anna B. Sheppard and Michael Mooney, visual effects supervisor Geoffrey Baumann, and music supervisor Susan Jacobs.
Warner Bros. is clearly locking in the final public-facing credits as the marketing campaign starts to ramp up.
A new press release also feels like the studio is beginning to position Supergirl for its summer rollout in a bigger way, which lines up with Supergirl taking over Superman Day on April 18th, and James Gunn said to start filming on Man of Tomorrow a day prior.
Release date
Supergirl opens in theaters and IMAX across North America on June 26, 2026, with international release beginning June 24, 2026.
