This thread can be used for general recommendations for everyone, so feel free to recommend anything that fits.

For me specifically, I'm looking for soundscape-style music that has the following properties:

1. no lyrics
2. very "low motion" (the music feels smooth, slow, and uneventful -- no fast or abrupt sounds, rhythms, or melodies)
3. euphonic (the music has an overall pleasant sound and feel to it)

A lot of the ambient and drone music out there hits 1 and 2, but doesn't often hit 3. Much of what I've found tends to have a darker or more neutral tone than what I'm looking for, and some of it comes across as a bit grating. I instead want something that's sort of persistently, mildly pleasant, if that makes sense.

EDIT: Forgot to mention that I'm specifically looking for music that I can fall asleep to and read books to, which is why the fact that it should be almost completely unobtrusive is so important!