ABSTRACT The sustained use of ‘Western’ style orchestration in Bombay film music can be attributed to the trajectory of two kinds of musical practices, one tethered to the leisure economies developed by the colonial rule from the 19th century onwards, and second, the robust and frequent presence of travelling jazz bands from the early twentieth century. As a period of intense transformation, the decade of the 1940s saw musicians from different parts of the subcontinent move to Bombay to find work in the film industry. This process often involved adapting to new performance contexts, genres and instruments. Studios in the Bombay film industry became fecund spaces where musicians and arrangers trained in Western classical music came in heady contact with the jazz men of Bombay’s nightclubss. Focusing on the late 1960s as another transitional moment, this article traces R.D. Burman’s affective encounters with these ‘mobile musicking bodies.’ Biographies of his key musicians give us detailed accounts of their training and involvement in diverse sites of musical performance, before they arrived in the Bombay film industry. This detour informs my analysis of R.D. Burman and his team’s innovative film scores, underlining vocal effects, side rhythms and inclusion of edgy off-key sounds. Moving away from a song-driven approach, I focus on title tracks, background scores and extended instrumental set-pieces of crime and action genres that are now getting recirculated on the internet by R.D. Burman’s fans. Through a methodology that will combine textual analysis, internet ethnography and close listening, the article will argue that these new soundscapes carried the inscriptions of global music cultures and ‘extra-musical’ noise.