Being able to import custom music to play in caves / while underground would be great, because currently Minecraft doesn't seem to have a trigger for caves in general, only specific cave biomes, e.g. lush caves.

Question is which music would be played there then, or just custom/specified music only?

Question is which music would be played there then, or just custom/specified music only?

Just for custom music would be a big help, I'm not sure about what vanilla music would play there.

Edit: Also, I would suggest integration for underwater or ocean music as well, since water is one of the other major music categories, and it actually does have specific music.

Adding a comment cause I'd also like to see this added at some point.

added cave and ocean additional music options

there is a mod that does that, i fogot the name but if u find it tag me