(Java! Wasn't paying attention) Biome Music Stopping/Fading (Plus how do you stop vanilla music?)

(Note to self: do not post late at night. >-< This is topic is supposed to be in "Help with modding (Java Edition)". Java, not Bedrock. If a mod could change this, thank you!)

This probably is much more of an advanced question, however, after figuring out how to get music to work with each biome (almost), I was wondering if there was a way to fade out current music and fade in the new biome's music upon walking into one?

Additionally, how would I go about stopping vanilla music from playing in the biome?