I also live in the Middle TN area and MTSU is is a great school for music business/music industry. Much more affordable than Belmont, and some would argue even a better program. The guaranteed scholarship deadlines have passed, but it’s not too late to apply and be admitted for fall.
I also wouldn’t count out a more general major at a school that is not in LA or Nashville. Any school that has great internship placement can help make these goals happen without the niche degree. Offhand, I can think of ten friends/classmates from UNC that completed internships in LA while in school and were able to land work in music industry or film after graduation. Schools like UNC with great internship placements and strong alumni networks can be really useful for building careers. I’m also of the opinion that it’s better to save money to fund things like internships/summer opportunities or grad school than to invest in an undergrad program that isn’t affordable/in budget.