Close your eyes in any forest on earth. Birds. Insects. Wind through leaves. You don't notice these sounds because you've heard them your whole life. They're the sound of normal.
Now take them away.
In the Vesper world there are no birds. No mammals. No insects you'd recognize. The forest is alive — loud, even — but nothing in it sounds familiar. Wet, organic, arrhythmic. Pulsing. Cracking. A low hum that could be wind through hollow structures or could be something breathing. You can't tell. Your body can't file it.
We built the soundscape in post-production. The starting material was real — insects from Southeast Asia, frogs from South America, things recorded in places most people will never go. We filtered them, deformed them, layered them until the source was unrecognizable.
Then we added human sounds. Mouths, skin, breath, fingers. Recorded close, processed, mixed into the ecosystem. A clicking that could be an insect or a tongue. A wet pulse that could be a membrane or a throat. The human body buried inside the sound of the world, the same way human DNA is buried inside some of Vesper's organisms. Present but unrecognizable. Just enough to unsettle.
The goal was never to sound alien. Alien is easy — you synthesize something, add reverb, it sounds like another planet. We wanted something that belongs to this earth but that you've never heard before. Every sound in the Vesper world could exist. None of them do. The world sounds possible. That's what makes it disturbing.
If you're building a world, try this. Close your eyes and describe what someone would hear standing still for sixty seconds. Not music, not dialogue — the ambient sound floor. What's constant, what's intermittent, what's missing. If you can answer in detail and it doesn't sound like anywhere you've been, you've got something.
If it sounds like a forest with a filter on it, you're still decorating.
