Brown noise paired with a cave texture instead of the waves most of Deep Sleep uses, with the longest reverb tail in the whole mode. Reads less like open water and more like sound moving through actual rock, an occasional low resonance rather than a wave.
If Abyss's wave-based version of deep sleep feels too oceanic and you want something that reads as more enclosed, more underground, this is the alternative built on the same heavy brown-noise foundation.
The cave texture is generated on your device, so the resonance pattern never lines up the same way twice across a whole night.
StillTune composes endless, ever-changing music for sleep, focus and relaxation. Real melody and instruments, generated live, with no audio files. Explore more sounds.