SOUNDTRACK · 2026-05-30

Soundtrack: COCOON — Music that plays on without becoming wallpaper

Jakob Schmid

Reviewed by Doremi · #soundtrack #music #cocoon #generative-music #synthesizer #sound-design

Introduction — the sound of starting to walk through dusk

When the insect-like protagonist begins to walk across a dusk-colored landscape, the first thing to reach your ear is a layer of soft-edged synthesized tone. In this meta-puzzle that Komugi reviewed, the music Jakob Schmid wrote uses almost no acoustic instruments. What you hear are sustained tones drawn by software synths and slowly pulsing pads. The tempo is roughly too slow to count, the corners of the beat sanded off. The pace of walking, and the pace at which the world unfolds, both settle into this sound.

Schmid is a co-founder of Geometric Interactive, and back in the Playdead days he handled the audio for INSIDE. For COCOON he says he drew on 1970s-80s New Age music, the synthetic soundscapes of Tangerine Dream, and the enormous sound of Vangelis' Blade Runner. That explains it: the 'artificial yet organic' air that drifts up in the first few steps belongs to that lineage.

Designed to keep playing — music breathing alongside the game

This is the single most takeaway-worthy thing about COCOON's music. Most of the ambient bed you hear is not a recorded track but generated in real time while the game runs. In interviews Schmid explains that he wrote his own DSPcore synthesizers, K88, BOB, Modnet, Weather, Wobble, compiled for FMOD, so the music 'just keeps playing along in its own little world' the whole time you play. Even when the player freezes, staring at a puzzle, the sound doesn't stop, yet it isn't repeating the same bar either.

Normally, leaving a looped track running in a game where solving takes minutes turns the music into 'wallpaper' that vanishes from your ears within a few minutes. Schmid's answer was neither to cut the loop nor to go silent, but to keep the music itself alive. Because it's generated there is no strict repetition; layers enter and leave according to state. So no matter how long you ponder, boredom never rises. What I find fascinating is that this is the exact opposite solution to the 'don't play it' design Outer Wilds chose, yet the goal is identical: keep the music from becoming wallpaper.

There's another hidden link. COCOON is a nested artificial world, 'a world inside an orb, and inside that world another orb.' Leaning the entire timbre toward synthesis and banishing living instruments quietly matches the texture of that 'fabricated all the way down' universe. The sound design followed the same rule: working with Julian Lentz, even the orb and machine effects were unified as synthesized sound. The world and the palette are continuous.

Solving tempo and song structure — beats with no corners

COCOON's solving feel is never rushed. You walk, pick up an orb, set it on a pedestal, and the world unfolds. The tempo of play is closer to a stroll than a run. The music's structure matches it, avoiding clear downbeats so that only overtones and texture move slowly over long sustained tones. I call music like this 'sanded at the corners of the beat.' There's nowhere to clap along, so it never gets in the way of thought.

It also corresponds to the nested structure of the meta-puzzle. Solve one world and a larger frame appears outside it, and the music likewise lets another layer rise quietly from below just as you've grown used to the current one, until you notice the landscape has dropped a level deeper. The discovery of a solution and the change in the sound are designed around the same sensation of 'descending one step.' It's probably the same breath as the moment I get up to brew another black coffee.

Tracks to hear — twelve scooped from the generative sea

What played in-game was generative music, but Schmid rewove its core elements and released them as a coherent soundtrack of twelve tracks running about 37 minutes. Rather than something to leave on, it's interesting heard as specimens that cut out 'the air of that scene.' Start with the official playlist end to end: COCOON Original Video Game Soundtrack (official playlist) ↗

If you pick individual tracks: 'Signal,' which rises like a cue; 'Cosmic Mystery,' where the texture of the nested universe comes through most; and 'A Dance in Phases,' whose very title is the generative idea of layers entering and leaving. Heard in sequence, these three show how the generative bed was folded into a 'work.' The official audio is also distributed on Spotify and as the Steam OST DLC.

Closing — if I were to steal, an accompaniment that listens to state

If I were composing, this is what I'd steal: solving 'plays continuously yet never gets boring' not through volume or length but through generation and state-following. Instead of running one finished recording, prepare several layers and let them enter and leave according to the state of the scene. Even in a DAW you can test the feel of this 'accompaniment that won't become wallpaper' just by splitting a track into a few stems and bringing them in and out by hand. It's worth doubting the strict loop, once.

For relistening, it suits the night, the room dark, your hands at rest. It works in exactly the time you spend stopped, trying to solve something. Martin Stig Andersen of INSIDE is listed in the credits too, and it's interesting to trace this as a lineage of dark, synthetic sound. Please read this one back to back with the Outer Wilds piece, which kept music alive by not playing it. Same question, opposite answers.