I think maybe I've always used music to help with my emotional regulation.
I've been realizing lately that I've always been a bit of a storm inside, pretty much all the time, but was trained from an early age never to talk about it or show it -- so I often didn't know "how I feel", but I also knew that music could make me feel better sometimes.
...and maybe that's part of why I seem to be having more trouble with it lately -- because there are logistical issues here that make it difficult to listen to music, so I don't do it nearly as much as I used to.