Almost everything else here is generated. This one isn't. It's a real field recording of a wetland at night near Felipe Carrillo Puerto, in the Mexican state of Quintana Roo, recorded by Felix Blume on October 30, 2015, and released to the public domain under a CC0 license so that anyone could use it.
What you're hearing
Insects, layered and continuous, with occasional calls rising out of the background — the sound of that place, that night, looped so it can play as long as you like. It's honestly a loop, not an endless recording, and a close listener may notice the seam; what was recorded that night is what plays here, left alone rather than tidied up. This sound is marked Pro. More real recordings are on the way, each one credited the same way — recordist, place, date — or not added at all.
Listen safely
This is a sound, played back through whatever speaker or headphones you already own. It doesn't diagnose, measure, or promise anything about how you sleep, focus, or feel — it's just noise and a handful of real recordings, mixed the way you like them.
Keep the volume low enough that you'd still notice a smoke alarm, a phone ringing, or someone at the door. If you fall asleep in headphones, choose a volume and a pair you'd be comfortable wearing all night, and a session length that ends when you'd want the sound to stop.
If you use this near a baby, keep the speaker several feet from the crib, never inside or clipped to it, and keep the volume low — the same care you'd take with any sound machine in a nursery.
If your relationship with sound, or with sleep, feels difficult rather than simply restless, a doctor or audiologist is the right person to talk to. This is a mixer, not a clinician.
Is this a real recording or a synthesized sound?
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It's real — a field recording made near Felipe Carrillo Puerto, in the Mexican state of Quintana Roo, on October 30, 2015. Nothing about it is generated; it's the actual sound of that place on that night, looped so it can play for as long as you'd like.
Who recorded it, and can I hear more of their work?
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It was recorded by Felix Blume and released to the public domain under a CC0 license. This mixer's info panel for the recording links straight to the original upload, where you can find more of their field recordings.
What does "public domain" mean for a recording like this?
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A CC0 license means the recordist has waived their copyright, so the file can be used, shared, and built on by anyone without needing separate permission. We still credit Felix Blume by name here, because a recording made by a real person in a real place deserves that credit even when the license doesn't require it.
Why is this sound marked Pro?
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The free tier of this mixer is the three synthesized noise colors — green, brown, and white. Real field recordings, including this one, are marked Pro; Pro sounds arrive with the next release.
Will more real recordings like this one be added?
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Yes. A handful of other recordings from the same region are already shortlisted, and more are planned from a trip specifically aimed at building out this catalogue. Each one will carry the same kind of credit this page does — recordist, place, and date — or it won't be added at all.