I've never heard of music therapy.
Music has nonverbal, creative, structural, and emotional qualities.
In order to practice music therapy, a person must receive a minimum of a bachelor's degree in music therapy from an accredited college or university. The music therapy bachelor's degree is rigorous and intensive. The Music Therapist's Internship Upon completion of an undergraduate degree, music therapists must complete a 1040 hour clinical music therapy internship before they are eligible to become certified. Internships are approved by the American Music Therapy Association and are directed by qualified music therapists who receive supervision training from the association. Most internships last for six months and require full time effort from the prospective music therapist.