"An important part of the film is its musical structure; it's the structure of hip-hop. Hip-hop turns in loops and the kids go round in circles : there's been breakdancing, "graf", rap etc... Rap is an urban music which one can almost say is without beginning or end. It's really important in the film : within each scene, the editing was often based on the music. It's jumpy : I often cut on the snare drum beat, or on the bass drum. The music doesn't change the sense of the narrative, but I didn't hesitate to add or cut a few frames to be in synch with it." (Jean-François Richet)