Disclaimer: I do not have an official diagnosis, I just strongly suspect I may be on the moderate side of the spectrum, which has been confirmed by the tests I took so far.
Had a couple of years in Uni when I played bass in two bands - blues/rock and jazzy covers. The entire "musician" experience, for me, was the point where life made sense. I would call it the moment of feeling alive in the sense that the whole context encouraged me to be as present and as 'in the now' as I've ever been. Used to lose myself in the music and the friendships, even concert preps were engaging. Guess the whole planning, gear handling, and the set-up itself tickled me in a certain way.
Surprisingly, even my relatively pronounced agoraphobic side sort of calmed down during that period (although, admittedly, the fact that I took Theatre and acting as my Majors may have had an immense impact on that, too).