The Sonic Siege: Matthew Pusti’s Pulsing Score for A24’s ‘Onslaught’ Detailed

September 3, 2026 5 Min Read

As anticipation reaches a fever pitch for Adam Wingard’s latest genre-bending thriller, Onslaught, A24 Music has pulled back the curtain on one of the film’s most vital components: the original motion picture soundtrack. Composed by the enigmatic electronic visionary Matthew Pusti—widely known by his moniker, Makeup and Vanity Set—the score promises to be a visceral, synth-heavy companion to the film’s high-stakes narrative. With the digital release set for this Friday, September 4, and the film’s nationwide theatrical debut arriving concurrently, the convergence of Pusti’s auditory intensity and Wingard’s kinetic direction is poised to be a standout cinematic event of the year.

The Main Facts: A Collaboration of Genre Titans

The announcement confirms that the full soundtrack for Onslaught will be available across all major digital streaming platforms on September 4. This release comes on the heels of a successful teaser campaign, which included the early debut of the film’s title track as a digital single.

Matthew Pusti, who has carved out a distinct niche in the industry through his work on The Girlfriend Experience and A Good Woman Is Hard to Find, was tapped to capture the unrelenting pressure of Wingard’s latest vision. Known for his ability to craft immersive, retro-futuristic soundscapes that bleed tension, Pusti’s involvement suggests that Onslaught will lean heavily into the industrial and electronic motifs that have become hallmarks of modern horror thrillers.

The film itself boasts a powerhouse ensemble cast, including Adria Arjona, Dan Stevens, Reginald VelJohnson, Drew Starkey, Eric Wareheim, Michael Biehn, Alex Pereira, and Rebecca Hall. The plot follows a mother living in a secluded trailer park who must utilize her dormant survival instincts to shield her family from an escaped military experiment, all while a desperate team of mercenaries struggles to contain the chaos.

Chronology: From Concept to Sonic Release

The road to Onslaught’s release has been marked by a deliberate and calculated rollout strategy.

Late Summer 2026: A24 began teasing the project, highlighting Adam Wingard’s return to the horror-thriller space.
August 26, 2026: A24 Music released the first official track from the score, “Onslaught,” providing fans with their first taste of Pusti’s industrial-leaning sound palette.
September 1, 2026: Official confirmation of the full album tracklist and digital release date was disseminated to the public.
September 4, 2026: The simultaneous release of the digital soundtrack and the nationwide theatrical premiere, marking a synchronized effort to capture audience attention both in the theater and on digital streaming platforms.

This timeline reflects A24’s standard approach to film marketing: leveraging the score as a primary driver of atmospheric hype, ensuring that the audience arrives at the cinema already familiar with the film’s distinct aural identity.

Supporting Data: The Anatomy of the Soundtrack

The soundtrack is a sprawling 22-track collection that mirrors the film’s relentless pacing. The tracklist is as follows:

Onslaught
Baylor Arrives
Blood on the Ceiling
The Cockroach
Daisy Chain
Outnumbered
Cyrus
The Test
The Crybaby
A Trail of Bodies
Hunter and Prey
The Killers Fan Out
Attack on Windy Oasis
Stay Hydrated
The Ideal Combatant
Smoke on the Horizon
I Saw You Die
The Butcher
Chainsaw
Wrong Trailer Park
Cruiser
One Eye (Celeste’s Theme)

The titles themselves—ranging from "Blood on the Ceiling" to "The Ideal Combatant"—evoke a sense of escalating violence and tactical warfare. Musically, Pusti’s work is expected to bridge the gap between classic slasher-film tropes and the cold, calculated sound of modern military-techno.

Official Responses and Creative Direction

In promotional materials, director Adam Wingard has spoken at length about the importance of the sound design in grounding the film’s more heightened, "escaped military threat" elements. By pairing an electronic artist like Makeup and Vanity Set with a grounded, gritty setting like a trailer park, Wingard aims to create a cognitive dissonance that keeps the audience off-balance.

"We wanted the music to feel like it was vibrating out of the environment itself," a spokesperson for the production noted. "Matthew [Pusti] didn’t just write a score; he created an auditory representation of the survival instinct."

For Pusti, the challenge was balancing the human element—the mother’s desperate fight for her family—with the mechanical, heartless nature of the threat. The inclusion of "One Eye (Celeste’s Theme)" suggests that the score also contains personal, character-driven motifs, providing a necessary emotional anchor amidst the carnage.

Implications: Why ‘Onslaught’ Matters for Film Scoring

The release of the Onslaught soundtrack is more than just a promotional necessity; it signifies a broader shift in how high-concept thrillers are marketed.

The A24 Influence

A24 Music has become a powerhouse in the industry, often turning soundtracks into cultural artifacts that exist independently of the films they represent. By treating Pusti’s score as a standalone electronic album, the studio is tapping into the cult following of artists like Makeup and Vanity Set, bringing them into the orbit of mainstream horror fans.

The Return of the Synth-Horror Renaissance

The past decade has seen a massive resurgence in synth-heavy scores, largely popularized by the Stranger Things effect and the work of composers like Disasterpeace and Cliff Martinez. Onslaught appears to be leaning into this trend, using the genre’s tropes not as a nostalgic gimmick, but as a legitimate tool for conveying dread. The use of repetitive, driving percussion and oscillating synth leads effectively mimics the sensation of a ticking clock, which is essential for a "siege" narrative.

The Convergence of Talent

The casting of diverse stars—ranging from the action-heavy pedigree of Michael Biehn and Alex Pereira to the dramatic weight of Rebecca Hall—suggests that Onslaught aims to be more than a standard slasher. The score serves as the connective tissue, binding these varied performance styles into a cohesive, anxiety-inducing experience.

Impact on Future Scores

Should Onslaught perform well at the box office, it is likely that we will see an influx of similar electronic-heavy scores in the mid-budget thriller category. Studios are increasingly recognizing that the "vibe" of a trailer, driven by a memorable, aggressive soundtrack, is often the deciding factor in whether a younger, digital-native audience chooses to see a film in theaters.

A Final Note on the Cinematic Experience

As audiences head to theaters this weekend, they will be stepping into an environment where every sound counts. The score for Onslaught is designed to be experienced at high volumes—a sensory assault that complements the film’s intense, survivalist themes.

From the opening notes of the title track, "Onslaught," to the final resolution of "One Eye (Celeste’s Theme)," Matthew Pusti has crafted a roadmap of the film’s emotional and physical trajectory. Whether you are a fan of electronic music, a follower of A24’s meticulously curated library, or simply a viewer looking for a high-octane thriller, the Onslaught soundtrack represents the pinnacle of modern horror composition.

The film serves as a reminder that the best thrillers do not just rely on what is seen on screen; they are defined by the atmosphere created in the dark. With the combined talents of Adam Wingard’s direction and Pusti’s industrial brilliance, Onslaught is set to be a defining moment in the 2026 film season.

The Onslaught original motion picture soundtrack will be available for streaming and digital purchase on September 4, 2026, through A24 Music.