Sleep by Max Richter
Fascinating and beautiful. Max Richter composed a full eight and a half hour album to listen to while you sleep.
As you can imagine, most of the music and sounds are pretty serene.
But it gets better: there is a free iPad app which you can also run on your Mac (if it’s an Apple Silicon one). The app connects to Apple Music or Spotify, and offers three modes:

I am using the Focus mode to listen to high-quality instrumental ambient music while I work or read.
You can set a duration, basically a timer, and the app auto-selects tracks. I can’t really tell how much that varies yet. But the point is that all I have to do is set the duration and hit play. The app then sort of remote-controls the music app for me.
You also get a nicely done animation to go along with it!
