I frequently integrate music into my therapy sessions with clients to help them to adjust their moods. Recently, a reporter who was doing a story about Stevie Wonder interviewed me about the impact of his music on people. Here is a link to that piece which was picked up by the Asbury Park Press.
http://www.app.com/apps/pbcs.dll/article?AID=/20071216/ENT/712160313/-1/newsfront