Lawrence and St Olaf have stellar music programs that include non-majors but, as mentioned upthread, they’re out of your preferred area. Still, if you want strong academics and strong opportunities for music, those two should be at least considered. Perhaps fill out the “request info” form and see what comes in the mail.
Vassar and Yale are good for music; I’d imagine Barnard would have opportunities with Columbia and NYC. Overall, I’d avoid a large school with a Music school or conservatory since these tend to restrict their opportunities to music majors.