Originally Posted by jdostie

Most college students change their major 2-3 times; this according to several of the colleges my daughter considered before she chose where to attend last year. And, depending on the students background there is usually sufficient general education required to fill that first year in any event.

You can also consider major/minor, and double major.

Back to the question of practicing on tour, I think there is good advise there. Especially now that drum corps are (mostly) playing Bb instruments, there is no conflict with ear training, and no need to carry an extra horn. Get some study material, and maybe some direction from your teacher before tour, and if possible between tours. I also like the idea of "doubling" and not making any final decision. But by all means, don't give up, even if you have to have a non music major I bet you can still continue your music education as a minor or (enrichment/elective), and possibly make a change later if things go the way you hope they will.