There are so many good things to listen to. I would like to recommend some light music that is very suitable for sleeping. It is very quiet.

"Pilgrimage of Solitude", "luv letter", "refrain", "Glory of the Knight King", "Summer Festival", Yume Hanabi. "Without You I Am Dying", "The Street Where the Wind Lives", "No Stain", "Silent Moon", "The Wizard of Oz", "The Miko Platycodon", "The Time Traveler" by Isomura Yukiko "Missing", "the rain", "もののけ姫", "さくらのseason", "Original Scenery of Hometown", "Cage", "Night Piano Music Five", "Tears Tears", "Water Lilies", "Night Brightness", "Original Scenery of Hometown" and so on. These can be found in NetEase Cloud Music, I hope you like them.