My university studies were in music, and many of my mentors trained me on the path of a concert pianist. Nowadays, a large portion of my professional work is as an organist. I didn't plan it that way, things just seem to lead there. It can be a lot of work at times, but I find the frequent flow of repertoire very refreshing - every week one is working on different music because every week one is presenting a new set of repertoire. It contrasts to the concert pianist workflow where one works on the same rep every day for six months preparing for a single concert. Being an organist also allows me many opportunities to improvise, an aspect of music I am very passionate about. The traditional concert/recital stage for classical music can at times look down on improvisation as a lesser art, and I did not want to become part of a culture that espouses such ideas, contradictory as they are, as a good portion of the repertoire was written by master improvisers or had its beginnings as an improvisation.
If not in music I probably would have gone into engineering or tech. I took a lot of science courses before university, thinking that is where I might want to go. Teaching is also something I like doing, my interest in helping others learn is not just isolated to musical topics.