<p>The OP seems to have music as an important HOBBY. I think the OP would find opportunities for that at any of the listed schools. I know they are there at Chicago.
Chicago is known for being particularly strong in music theory. But that of course is mostly for people who want to make music their life work.
Oberlin seems to be the closest to fitting the bill. My only doubts would be your take with the politics there (the recent graduates I know hated Bill Clinton) and how you’d feel as a dabbler among so many professional musicians-to-be.
If you are worried about the music tail wagging the academic dog, then the University of Chicago is the class of the academic lot.</p>