At the Ballhaus to the future in Kreuzberg, art and music is an experiment through which this world can imagine its social aspect as utopia. The Ballhaus as theatre. The theatre as concert hall. The concert hall as club. The club as neighborhood. The neighborhood as world. The world as utopia. Utopia as art. Art as future. The Ballhaus to the future. At Naunynstraße in Kreuzberg.