The Mannheimer Sommer is an international festival for music and theatre from Mozart to the present day, which takes place in Mannheim and Schwetzingen - organized by the Nationaltheater Mannheim. This year's motto was "Up to the stars". In this respect, it was only logical to choose star images as a consistent design element. The Citylight Posters once again featured a different front and back printing effect: at night, the stars light up.