Usually, an anime soundtrack is credited solely to the composer. Bubble breaks this convention. The artist credit for the film’s music is listed as "Hiroyuki Sawano × [nZk]", but with a twist: the main performers are the voice actors themselves.
The soundtrack features heavy contributions from:
By using the voice actors as the primary singers, Sawano bridges the gap between the narrative and the score. When you hear the longing in the lyrics, it feels like an extension of the characters' internal monologues rather than a background track dubbed over a scene. This blurring of lines between voice acting and musical performance is the soundtrack's strongest asset.
To understand the genius of this OST, you must listen to three specific tracks. Do not shuffle them. Experience them in order. anime bubble soundtrack
The "King of J-Pop," Komuro, scored the City Hunter series, which is essentially Miami Vice in Shinjuku. The soundtrack is aggressive, synth-heavy, and built for night driving. The opening theme "Go Go Heaven" is the unofficial anthem of the bubble era—euphoric, loud, and utterly unconcerned with the recession that was hiding around the corner.
No discussion of the Bubble score is complete without acknowledging its dual engine. Hiroyuki Sawano is famous for his "Sawanotorians"—the electronic rock and orchestral hybrid that makes your skin crawl during a colossal titan attack. But for Bubble, he brought in a secret weapon: Kohta Yamamoto.
Yamamoto, who co-composed Attack on Titan: The Final Season, specializes in atmospheric dread and crystalline piano. Together, they built a score that oscillates between two poles: Usually, an anime soundtrack is credited solely to
The result is a soundtrack that feels sticky. Like a soap bubble, it reflects light (sweet J-pop vocals) but is moments away from popping (aggressive synth stabs).
When Netflix released Bubble in 2022, it was marketed as a visual spectacle—a reimagining of the Little Mermaid set in a gravity-defying, post-apocalyptic Tokyo. Directed by Tetsuro Araki (Attack on Titan, Death Note) and animated by Wit Studio, the film was a feast for the eyes. But every great visual spectacle needs a heartbeat.
For Bubble, that heartbeat was provided by none other than Hiroyuki Sawano, the composer behind the iconic sounds of Attack on Titan, Kill la Kill, and 86. By using the voice actors as the primary
However, the Bubble soundtrack isn’t just a typical Sawano score. It is a unique collaboration with the film's voice actors, creating a sonic landscape that is as ethereal as the floating bubbles dominating the skyline. Today, we are breaking down what makes this soundtrack a masterpiece of emotional storytelling.
Are you a producer wanting to capture this magic? The modern revival is not about cloning; it is about honoring the mix. Here is the cheat sheet for the anime bubble soundtrack mixing desk: