I recently spent the night in a noisy hotel. And it STRESSED me out. I was exhausted from the flight and the thought of a sleepless night from the raucous noise of my neighbors was causing my heart to race and my blood to boil. I remembered hearing in a podcast recently that birds singing have a calming effect on humans due to an evolutionary signal of safety (birds don't hang out and sing when threats to humans are around). I started poking around on Spotify looking for nature sounds and found this lifesaver playlist of rain sounds.