University of Pennsylvania, Master of Applied Positive Psychology, Capstones on Music
Two "MAPPsters" did their Capstones on the influence of music on wellbeing. Here are links to their work:
Yumi Kendall: Cultivating Meaning at Work, in Four Movements
https://repository.upenn.edu/mapp_capstoneabstracts/130/
Patricia (Trisha) Fox Ransom: Message in the Music: Do Lyrics Influence Well-Being?
https://repository.upenn.edu/cgi/viewcontent.cgi?article=1094&context=mapp_capstone