Reddit reviews Jamboree

I find that nature sounds can help, like the sound of a thunderstorm on repeat; here's one, Echoes of Nature - Jamboree.

Ambient techno can be quite relaxing to fall asleep to, like instrumental, mellow stuff by The Orb, Boards of Canada, Moby, etc.

There are some movie soundtracks which are dreamy and sleep-inducing, like the recent soundtrack to the movie Drive, also the soundtrack to Gladiator.