SOUNDTRACK · 2026-05-30

Soundtrack: Outer Wilds — When music becomes a tool for solving

Andrew Prahlow

Reviewed by Doremi · #soundtrack #music #outer-wilds #game-design #composition #sound-design

Introduction — this is not music to 'have on'

Let me say it up front: if you listen to the Outer Wilds music as 'a soundtrack of nice tracks,' you only get half of it. In the space-exploration game Komugi reviewed, the music Andrew Prahlow wrote is, most of the time, not playing at all. While you drift and watch the planets, what reaches your ear is mostly wind and the hum of machinery.

That isn't laziness; it's design. In interviews Prahlow explains that constant looping music in an exploration game turns the score into 'wallpaper' and drains its meaning, so he made the music follow the player's sense of exploration. The moment a cue rises is therefore a signal: 'something just happened.' For anyone who writes music or builds games, I think that single decision is already worth taking home.

Designing the silence — give thought to silence, sound to discovery

Most of the time you spend solving a puzzle or exploring a game like this is silent time, kneading hypotheses in your head. The Outer Wilds music deliberately refuses to ride along with that thinking time. Instead, a short cue is slipped in when you arrive somewhere new, or notice something that was hidden. The tempo sits below a walking pace, at maybe 90 BPM body-temperature.

In composer's terms: don't try to swell the 'while-you-think' stretch. Lay down a constant tension drone and the player's thinking gets hurried along by the music, and the 'I've got it' of solving gets drowned out. Prahlow did the reverse — he assigned silence to thought and placed sound only at the moment of discovery, as a reward. The silence isn't empty space; it's the preparation that makes the next note land.

Assigning each location its own track helps too. Timber Hearth's plain banjo, Dark Bramble's echoing, anxious song. Hear the timbre and you know where you are. The music takes over part of the job of a minimap.

When sound becomes a tool — the Signalscope and the scattered solos

Here's the part unique to this game, and the most interesting. Your fellow astronauts are scattered across the solar system, each playing a fragment of the same melody as a solo on a single instrument. Using a receiver called the Signalscope, you hunt them down by following their 'audio signal.' The music is something to enjoy by ear and, at the same time, the very tool of exploration.

The fragments sound separately, but aim the Signalscope at the right moment — when the planets line up — and all the instruments stack into one ensemble (it's even an achievement, 'Harmonic Convergence'). Sound is information, direction, and reward all at once. This game deliberately dissolves the borders between score, sound effect, and UI.

The takeaway for game makers is right here. Design music as a layer that 'carries information' from the start, not a layer you 'add on afterward,' and players begin solving the game with their ears. Mute Outer Wilds and it gets harder to solve — because the music isn't just strong as content, it's woven into the system.

Solving tempo and song structure — the final chord was sounding from the start

Outer Wilds is a puzzle where you never gain tools — only knowledge. The sun explodes every 22 minutes and the world resets to the morning campfire. All you carry across is what you've understood, and you replay the same 22 minutes adding notes of understanding each time.

The music's structure maps onto this exactly. 'Travelers,' where the scattered solos finally become one ensemble near the end, is actually derived from the opening campfire theme (Main Title), and Prahlow says he recorded that main melody back in 2012–13, very early in development. So the chord where everything comes together at the end was folded into that first single banjo from the very beginning. The moment of solving — knowledge binding into one 'so that's what it was' — has the same shape as the moment the fragments grow into one ensemble.

It's also built so two civilizations' timbres can be layered. The inhabitants (Hearthians) carry plain campfire folk melodies; the precursors (Nomai) get textures 'like a piano being ripped apart in space,' and the two themes can be superimposed. The orchestration narrates the very story of a player digging through the precursors' ruins. Incidentally, many of those vast sustained tones aren't synths at all — they're washed-out guitar run through a long chain of pedals. And the huge end-times pad fuses synths from late-1980s game music through the modern day (down to NES-emulated sounds) into one mass, topped with a minimal melody. It doesn't bludgeon you into tears; it reassures you through the history of timbre.

One more. The loop-end signal is a minimal cue that ticks like a fast clock, yet somehow sounds less like a rush and more like an invitation: 'on to the next loop.' What sound you place on the moment of failure or repetition changes the 'meaning of retrying' the player feels. That runs continuous with the ethics of Undo.

Tracks worth hearing — the seed, and what it grew into

Start with the campfire banjo, 'Main Title.' One minute eighteen. Folded into this single piece is the seed of the melody everyone converges on later. What matters is that it first sounds like an unremarkable solo. Official audio (Annapurna Interactive / Andrew Prahlow) below.

Then the seed grown up, 'Travelers.' Over three and a half minutes the headcount swells and the Main Title melody rises as an ensemble. Played back to back, you can hear that the late-game emotion isn't an addition of timbres but a payoff of the opening theme. If you're studying it for your own writing, listen to the two in sequence and write down what stayed the same and what was added.

Both are embedded from Andrew Prahlow's official topic channel (label-provided audio). The full album streams on Bandcamp ↗ and via the official Steam OST ↗.

In closing — what you can take home

If I were writing music myself, three things I'd want to steal from this work: don't fear silence — don't assign sound to thinking time; design sound as information, placing notes that are 'useful' and not only pleasant; and fold the theme you want to sound at the very end into the plainest first note. You don't need flashy gear or a big ensemble. One washed-out guitar, if the design holds, can raise a whole cosmos from a person's hands.

If you want to learn more about the placement of sound and silence, Daniel Olsén's Lorelei and the Laser Eyes teaches it from another angle. But that's for another night, when the mood takes me. Tonight, Main Title once, then Travelers — the seed, then what it grew into, in sequence.