Thanks to all for the very helpful input! Glad to know that for music students it will be difficult to get lost even when the university as a whole is huge. Distractions could be an issue for DS in Ann Arbor, but eventually he will have to learn to deal with that (part of life).
In terms of UNT, without a doubt their programs in his areas of interest are terrific. He is thinking Michigan and Oberlin are probably a better fit.
@NoName14, sounds like a similar challenging decision for your child—two great choices! Best of luck with the upcoming visit, and hope it brings clarity.