I was curious too.

After listening to a bit of the first and then randomly a few seconds of a few more songs, I agree. I don't like my night time music to build up or go from calm to a sudden full orchestra.

That being said, I did find one I liked, called Ricter:Aria (pt1).

https://youtu.be/0_6jmOmDUes

Personally I have a playlists of music that works for me. Some nights it helps, others I end up shutting it off. Everyone's different.

Beside music, there's a lot of other external factors that could be affecting your sleep (ignoring internal factors, see a therapists or something for those).

• Your pillow. is it flat and time to replace or too new and puffy). You might be able to toss it in the dryer on low for 10 mins to get some oomf back, that or it will explode.
• bed. too firm, too soft, too old, sometimes flipping the mattress 180 so head side is now the foot side helps.
• blanket. are you too cold without, too hot with?
• PJs, are they too heavy, scratchy material?
• room temp/humidity. Is the room comfortable, is there good air flow?
• light, is it too dark, too bright?
• does that goofy branch outside the window look a person?