Hi @vanessa, I find this topic really interesting!
Answering the questions:
I definitely observe changes in myself after playing music, specially when playing music in a group. There are sometimes when you play with others and when you finish playing you feel OK, but there are other times when you finish playing and you feel amazing, and I think that this happens when you truly connect to each other. It's hard to describe that feeling because it's magical. It's like if you could get a complete understanding of something, and in the path you get to know each other in a way that's totally different from other communication channels.
Based on this question, I've just created a topic to discuss a way to present music, in particular sound synthesis, by relating it to other disciplines to make the concepts more fun and accessible.