Is your feature request related to a problem? Please describe.
Many of the different events and biomes are incompatible, having one song override another, with no way to specify a song in a really specific situation.

Describe the solution you'd like
All types of events can be put in a group of lines as a very specific event.
For example,

group.sandstorm {
event.rain,
biome.Desert,
dimension.0,
area.outside
}

group.sandstorm=Sandstorm

would play song Sandstorm in the Desert biome while it is raining, while the player is in dimension 0, and the player is in the area outside. The first group.sandstorm is to define what group.sandstorm is, and the second one is to define the song that plays in that group

Describe alternatives you've considered
I could just pick songs that make sense for all biomes no matter the event.

Additional context
My solution for this definitely requires fine tuning and the syntax of my solution definitely needs fixing, this is just the base idea for it. My ideas come from wanting to add even more to just this mod and vanilla minecraft, but supporting things that other mods use to automatically have support for them. Also, adding this feature would remove the need of my feature idea of adding a priority system for events.

This is interesting, I will add to the list of features