Credits go to Vindsvept: https://www.youtube.com/channel/UCfSUheoljDlGDjerRylO4Nw
All of his music is free to use if you credit him and ofc no monetization.
The overworld music is very immersive and quite relaxing, while the nether music is eerie and spooky.
Works especially well with the Skyrim sound-pack resource pack on the forums. I cannot link to it, but search it up. it's there.
This is one of the songs for the nether:
And this is the style that you will find in the overworld on a calm day:
Pretty cool huh?
Thanks to LudoCrypt for helping me code the sounds.json!