I second Lawrence. And check out Oberlin’s BA program in the college. And College of Wooster, Grinnell, Colorado College, Carleton, Beloit, Earlham. Really, the majority of liberal arts colleges will offer a BA in Music, with composition classes. Also some of the larger public universities like Minnesota might work for you. (I don’t know specifically which Midwestern universities offer a BA in music, but it would only require a little research.)