It would seem that the original poster would want to check the schools listed above by Sue 22 to see if the best opportunities go to the BM students, since he wants to do pre-law and at the most minor in music. The extracurricular opportunities, on and off campus, would seem to be the priority and many liberal arts colleges without conservatories might fit the bill better.
But check the details for each school above: every school is different. For instance, the Bard Jazz Program is not in the conservatory. It looks great.
The Oberlin and Lawrence links above are for conservatory programs, meaning 2/3-3/4 classes in music, so would not seem to fit the goals of the OP unless they change.