Sound is not simply atmosphere in Tuner; it is the story’s pressure system. The thriller follows Niki, played by Leo Woodall, a gifted piano tuner whose extremely sensitive hearing is both a professional asset and a painful limitation. That sensitivity helps make him unusually capable at his work—and eventually useful to a gang of thieves as a safecracker—but it also changes the danger level of the ordinary world around him.
For sound designer Johnnie Burn, the premise had a personal point of entry. Burn experienced a mild form of hyperacusis after witnessing an explosion in his late teens. He temporarily lost his hearing, then found that, when it returned, common sounds had become intensely difficult to tolerate. That experience gave him an immediate understanding of the script’s central listening problem: how does a film let an audience grasp a character’s painful sensitivity to sound without reducing the condition to a vague, cinematic “super-hearing” effect?
The answer involved building different states of hearing into the film’s sound design and using Dolby Atmos to extend the effect throughout a theater. Burn and director Daniel Roher refined the mix at the level of individual decibels, with the aim of making Niki’s shifting relationship to his surroundings legible through sound itself.
What hyperacusis means in the world of ‘Tuner’
Hyperacusis is a condition involving heightened sensitivity to sound. Crucially, it is not presented here as deafness, nor simply as the ability to hear more detail than everybody else. The issue is that sounds which other people can comfortably ignore may become uncomfortably or dangerously loud for the person experiencing them.
That distinction matters to Tuner. Niki’s hearing does not turn every moment into a clean technical advantage. It helps explain why he is such an expert piano tuner, and why his skills can translate to the precise auditory demands of safecracking. But the same sensitivity is described as debilitating enough to have kept him from pursuing his ambitions as a pianist. His talent and his restriction are intertwined rather than separate traits.
The movie’s premise also places that sensitivity in a more complicated life. Niki becomes entangled with thieves while developing a relationship with Ruthie, a gifted musician and composer played by Havana Rose Liu. That setup means music, mechanical detail, urban noise and threat can all carry a stronger narrative charge than they might in a conventional crime thriller.
For viewers, the practical storytelling challenge is perspective. A traffic signal, a shower tap, a pan being placed in a dishwasher or a motorbike approaching beside a car may be ordinary background details in daily life. For Niki, those sounds need to register as information with consequences. The film’s soundscape is designed to teach the audience that difference, not merely tell them about it in dialogue.
Recording the everyday from the ear’s point of view
Burn’s research process began with a deceptively simple question: what does the everyday actually sound like when the brain does not successfully push it into the background? To explore that, he used microphones placed inside his eardrums while going through normal activities, then listened back to the recordings.
Related coverage includes ‘Tuner’ Builds Its Thriller Tension Through the Sound of Hyperacusis.
The exercise focused on sounds most people would usually filter out because they do not appear threatening. The clatter of kitchenware or the rush of water can be inconsequential in ordinary life, yet become intrusive when sensitivity changes the listener’s relationship with volume. By recording from that physical perspective and reviewing it later, Burn could identify how mundane noises may force themselves forward.
This is a useful distinction between volume and attention. A loud sound is not automatically frightening, and a quiet sound is not automatically harmless. In this film’s design, the dramatic question is often whether a sound breaks through Niki’s ability to manage his environment. The audience is meant to understand the instability of that boundary: an otherwise normal setting can become difficult when its sounds cannot be mentally dialed down.
That approach gives the material an experiential angle without claiming that one movie mix can reproduce every person’s experience of hyperacusis. The film is built around Niki’s perspective, a character-specific interpretation shaped by story, performance and sound design. Its goal is emotional and narrative clarity: viewers should recognize why a location, task or approaching vehicle can represent a risk to him.
Multiple listening states, not one permanent effect
A major part of Burn’s work was establishing several levels of listening. There is a sound perspective aligned with Niki’s exposed sensitivity, but there is also a state in which he wears ear defenders that restrict sound. The difference between those modes is central to the film’s grammar.
Ear defenders are protective hearing devices designed to reduce incoming sound. In dramatic terms, their presence gives the movie a way to show Niki actively managing his condition rather than treating it as a static trait. The audience can hear that management in the contrast between scenes or moments. Sound is no longer only environmental texture; it becomes a measure of control, vulnerability and preparation.
Burn has pointed to a traffic-light scenario, with a motorbike pulling up beside Niki, as an example of how the film establishes these states. The motorbike is a familiar piece of city noise, yet its arrival can land differently depending on whether viewers are hearing the scene from Niki’s more exposed point of view or through the dampening effect of his ear defenders.
That shifting perspective is particularly well suited to a thriller. Suspense often depends on what a character notices, misses or cannot safely endure. Tuner turns those questions into sonic ones. If Niki must assess his surroundings with extraordinary care, then the sound mix can place the viewer in the same uncertain act of sorting signal from intrusion.
It also helps avoid a simplistic “gift versus curse” framing. Niki’s acute hearing has obvious utility, but the film’s sonic design emphasizes its cost. The ability to detect detail does not erase the strain of living with a world that can become painfully overwhelming. That tension is the engine behind the character’s piano-tuning expertise and the danger of his deeper criminal involvement.
Why Dolby Atmos is important here
Dolby Atmos is an immersive audio format that can position sound around an audience, rather than relying only on a conventional fixed set of channels. For Tuner, that capability offered Burn and Roher a bigger canvas for the sense that sound is coming from all directions and asserting itself on Niki at once.
The key creative point is not simply that an Atmos mix can be louder. Burn’s description of the process emphasizes placement and surrounding volume: the format made it possible to play sound more forcefully all around the audience. That matters for a story about unwanted sonic presence. An isolated burst can startle, but a surrounding field of sound can suggest that a character has fewer places to retreat from what they are hearing.
Burn and Roher fine-tuned every decibel in the mix, treating Niki’s hearing perspectives as fundamental to whether the movie works. A decibel is a measurement used to express sound level. In a dramatic mix, attention to those increments helps determine not just how loud something is, but how it relates to voices, music, room tone and the surrounding environment. Tiny adjustments can alter whether a noise reads as distant, invasive, controlled or threatening.
In Tuner, that precision serves character point of view. The design has to preserve the audience’s understanding of a scene while also making room for Niki’s distress and concentration. Push too hard and the film could become exhausting or unclear; hold back too much and the condition could lose its force. The stated objective was to let audiences experience events alongside him, with each listening state helping define the stakes.
A thriller where listening is part of the action
Roher, an Oscar-winning documentarian, directs Tuner as a thriller whose action is organized around a heightened auditory perspective. Woodall’s Niki is not merely a specialist who happens to work on pianos. His specific sensitivity shapes his choices, his professional life and the criminal situation that develops around him. Liu’s Ruthie connects the story to a different kind of musical ability, as a musician and composer.
That makes the film’s audio work more than a decorative flourish. Piano tuning, composition, mechanical locks, traffic and household noise all belong to a story in which listening has practical, emotional and physical consequences. The sound team’s task was to find a language for that idea, from close-up everyday noises to a fully immersive Atmos environment.
It is a reminder that the most effective sound design is often not about making audiences notice technique for its own sake. Instead, it changes how they interpret a character’s circumstances. In Niki’s case, the world is crowded with sounds that other people may never register. Tuner uses that gap to make its thriller stakes feel immediate: a skill can be invaluable, but living inside it can still be overwhelming.
For more on the way film culture continues to shape music-world conversations, see Bruce Springsteen’s reflection on the long shadow of Jaws.
