The musical play of children in primary school playgrounds has been well documented throughout musicological, sociological and ethnomusicological texts [Bickford, T. (2011). Children's music, MP3 players, and expressive practices at a Vermont elementary school: Media consumption as social organization among schoolchildren (Unpublished doctoral dissertation). Columbia University, New York, NY; Campbell, P. (2010). Songs in their heads: Music and its meaning in children's lives. Oxford: Oxford University Press; Marsh, K. (2008). The musical playground: Global tradition and change in children's songs and games. New York, NY: Oxford University Press; Willett, R. (2011). An ethnographic study of preteen girls’ play with popular music on a school playground in the UK. Journal of Children and Media, 5, 341–357]. However, very few studies have examined the role of musical play in the secondary school environment, where participants are typically aged between 11 and 19. This article draws on an ethnographic study of teenagers' musical worlds in Australia and the UK, and examines musical play in their lives through the framework of childhood studies, with particular reference to the role of interpretive reproduction [Corsaro, W. (2011). The sociology of childhood. Thousand Oaks, CA: Sage] as a means to construct and consolidate distinct teenage cultures. The article argues that there is evidence of both local and global forms of teenage musical play, and that the intimate relationship between localised peer cultures and a global teenage ‘imaginary’ (Appadurai, A. (1996). Modernity at large: Cultural dimensions of globalization. Minneapolis, MN: University of Minnesota Press) provides a dynamic structure for the growth and transmission of a culture separate from both adults' and children's worlds.