This paper investigates interactional practices on expanded musical radio (from Hertzian airwaves to the Internet), taking as a case study the podcast Muqueca de Siri, which is dedicated to samba. Throughout the text, we discuss the pertinence of the ethnographic approach in researches about the reception/consumption of music radio in a new media environment with continually multiplying possibilities of sound production and circulation, shaping communities of listeners who switch between online and offline worlds.
