Abstract : Music in public spaces is now a common feature, but has paradoxically not been studied a lot so far. Hence our decision to analyse it. Based on interdisciplinarity and on the concept of mediation, this study aims to demonstrate that music is not to be considered in a structural way or in a social way but in both: music makes sense in action and situation. Then, far from being analysed from a linear perspective, the functions and effects of music take place in an interactive construction by the actors. From history to everyday life uses, this study elaborates a way of thinking music in an everyday life environment and discusses the questions it raises, such as listening modalities, cultural diversity, sonic environment management.