Berklee has a program, but is costly. Lesley in Cambridge had an expressive arts program. I work with a hospice and music therapy is offered, but some of it is on a volunteer basis. One of my kids is a dancer and working on movement therapy as an undergrad. Honestly not sure how reliable a living is possible with this type of program. If you love music, why not do performance or major in general music, then see what you want to do in 4 years and specialize. Conservatory undergrads do a lot of outreach and volunteering these days.
Alternatively, you could study psychology, counseling, holistic psychology or expressive arts (the latter two are offered at Lesley) and do music on the side.