I would caution that Brown is very selective and also more expensive than some of the other Ivies.
I always like to suggest Colleges that Change Lives for students who don’t want top schools but instead a great fit and experience. Some of them, like College of Wooster, are good for music.
You really need to decide if it is music you want. You do not have a strong drive for another subject. You can go for a BA or BS in music. (Actually Oberlin offers both and has recently enhanced their BA).
Music majors are well-respected and can work in all kinds of fields, and also have access to grad and professional schools like law, medicine, nursing, business etc.
Read the Double Degree Dilemma essay and decide which student most resembles you 