Hans Zimmer Explains Why HBO’s ‘Harry Potter’ Score Won’t Sound Anything Like John Williams’

Few pieces of film music have become as culturally inseparable from their source material as John Williams’ “Hedwig’s Theme.” More than two decades after it first played over Diagon Alley, that melody remains instantly recognizable to millions, making it one of the most intimidating musical legacies any composer could ever be asked to follow.

That’s precisely the challenge facing Hans Zimmer as he works on the score for HBO’s upcoming “Harry Potter” series. Rather than attempting to echo Williams’ beloved themes, Zimmer has made clear he’s taking the franchise’s music in an entirely different direction.

Speaking exclusively with Collider, Hans Zimmer said the score for HBO’s upcoming “Harry Potter” series will be “as far away as possible” from John Williams’ work on the original films. “I can’t write like John Williams,” Zimmer told Collider, “but even if I could, I would try to stay away as far as possible and try to be original.”

Zimmer pointed to his experience scoring 2013’s “Man of Steel” as a formative moment for handling exactly this kind of pressure. Having taken over the Superman franchise’s music after Williams’ beloved 1978 score, Zimmer described spending months paralyzed by the weight of that legacy. “For three months I was running around going, ‘I don’t know. I can’t do this. I can’t do this because it’s John Williams. John Williams is — it’s brilliant! It’s brilliant!'” he recalled.

That anxiety eventually reached director Zack Snyder, with Christopher Nolan, who served as a producer on the film, prompting Snyder to check in on Zimmer’s progress directly. According to Zimmer, Snyder flew down unannounced after learning no music had been written yet, forcing the composer to scramble together a tune under pressure. What followed became one of the more memorable pieces of advice Zimmer says he’s ever received from a filmmaker.

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“Zack just said the simplest thing to me,” Zimmer explained. “He said, ‘Hans, it was just a movie. This is just a movie.’ And that was so liberating. It’s just a movie, and my life is all about making music for movies, which I do because I love it. I love the movies, and I love having fun with it.”

That perspective appears to be guiding Zimmer’s approach to “Harry Potter” as well. He is developing the series’ original score alongside Bleeding Fingers Music composers Kara Talve and Anže Rozman, building new musical motifs designed for the show’s long-form, season-per-novel structure rather than trying to compress Williams’ film-length themes into a television format.

Williams originally scored the first three “Harry Potter” films, released between 2001 and 2004, with later installments handled by Patrick Doyle, Nicholas Hooper, and Alexandre Desplat. That history means Zimmer isn’t just stepping into Williams’ shoes specifically, but into a franchise that has already seen its sound evolve across multiple composers over the years.

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HBO’s “Harry Potter” series, developed under showrunner Francesca Gardiner and director Mark Mylod, is structured to give each of J.K. Rowling’s seven novels its own dedicated season. That format alone represents a significant departure from the film franchise, giving Zimmer room to build longer musical arcs rather than condensing each story’s emotional beats into a two-hour runtime.

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