You have a good chance but make sure there are other schools to love.
I would definitely suggest submitting a music supplement with a recording of solo work (or video, check they might prefer video), a music resume, and letter or two from teachers or directors. Things like work ethic are important as well as talent.
It really is all about what you can contribute on campus and to the mix of the class. Congratulations on all the things you do and enjoy high school!
ps Are you interested in the double degree with NEC? Would you be doing track in college? If biology is your intended major the answer is probably no to both but just wondering.