This chapter explores the specific well-being benefits that diverse forms of musical engagement can promote from the particular perspective of the social and applied psychology of music. It surveys recent social-psychological literature broadly, and the authors also draw from their own research offering case studies to highlight research evidence concerning health and well-being benefits when applying a social-psychological lens to music research. It explores the influence of newer, digital technologies for promoting self-regulation, such as mood management via playlists; points to the range of benefits across types of well-being from music participation; and considers the role of music facilitators and educators with respect to promoting well-being. Relevant influences range from micro- to meso-level determinants interacting across the levels to influence our experiences every day.