If we were able to hear the creatures floating in the depths of the ocean, I'm sure they would sound just like this lofi song.
You can guess by the moniker that sleepsleepsleep intends for us to relax in the last seconds before falling asleep. And then, when we're on the other side, to only be able to hear the harmonies that would bring us peace. "Deep Sea Dive" is blue and a bit lonely, so it needs us to hold it and take in the beautiful melody stepping over a steady beat. A lovely end to a hectic day.