From the American Music Therapy Association (AMTA)
Music Therapy is the clinical and evidence-based use of music interventions to accomplish individualized goals within a therapeutic relationship by a credentialed professional who has completed an approved music therapy program.
Music therapy interventions can be designed to:
Promote Wellness
Manage Stress
Alleviate Pain
Express Feelings
Enhance Memory
Improve Communication
Promote Physical Rehabilitation
Research in music therapy supports its effectiveness in a wide variety of healthcare and educational settings. For further information, please explore the rest of this site including the Frequently Asked Questions (FAQ) page and the 2014 press release, "Setting the Record Straight: What Music Therapy Is... and Is Not."
Below is a series from the Boston's Berklee College of Music's music therapy program that gives a good overview of the range and depth of music therapy practice.