ABSTRACT
Early in South Africa's HIV/AIDS crisis, entertainment education emerged as a powerful vehicle for communicating health and social messaging to combat the epidemic. Applied theatre now accounts for the majority of arts-based HIV interventions in sub-Saharan Africa, and continues a history of theatre for social change in South Africa in particular. While much has been written about the dramaturgical and communication theories that support such interventions, the role of music, a formidable tool in the applied theatre intervention arsenal, has received considerably less attention within applied arts intervention scholarship. This paper draws from Durkheim's collective effervescence to propose a theoretical approach to music within the creation and maintenance of effervescent assemblies that is being employed by HIV/AIDS interventions to encourage participation in HIV testing. The theoretical model of musical effervescence is situated within ethnographic fieldwork conducted while accompanying an applied HIV/AIDS theatre company on a national tour of South Africa.