Here we want to underline the contrast between the prototype of an universally recognized architectural model, Le Corbusier’s Unitè d’Habitation, which today has become a high standard middle class residence, and the degeneration of such a model as expressed in the French banlieu, representing today the most dystopic, conflicted, defeating product of this ideology. Segregation, ghettofication, cultural clash, vandalism, criminality are often associated with the French outcomes of the modern policies of concentration of the (mostly immigrant) population in new satellite cities. But aside from the sensationalistic perspective often employed to depict those urban realities, we want to enquire into the capacity to express new urban cultures and languages emerging in such a multicultural milieux. In particular, hip-hop culture, with its capacity to mix up different languages.