Sonic City immediately brings to mind the sound in the city. It is also a passionate and exciting adventure now conducted since 2003 by Transcultures, Centre of digital and sound cultures and its partners (Ville de Mons, le manège.mons) offering innovative art projects, combining contemporary musics, visual and digital arts to transform the urban space and offer all the public every year in summer, a poetic, friendly and sound itinerary. In 2003, the City of Mons, having the desire to develop a cultural policy turned to contemporary art practices, launches Transcultures sound arts festival : Sonic City, new summer event open to everyone in the city center; the proposal is original and innovative: Mons invests places with a historical, architectural or social density, and offers the public to re-discover it mainly by sound. Since 2003, numerous international artists invited by CitySonic stopped in Mons in order to offer their own interpretation of the city: Diane Landry, Lab[au], le collectif Mu, Hans Peter Kuhn, Pierre Bastien, Phill Niblock, Jacques Rémus… CitySonic has become a meeting point for numerous amateurs/connoisseurs and sound lovers. The festival is also created events in Brussels, Huy and in France.