The technical department of the Salzburg Festival is the focus of this photo exhibition. Through the Leica project »Bretter, die die Welt bedeuten« (»Boards that Signify the World«) the photographers Robert and Heidi Mertens allow glimpses behind the scenes and into the workshops of the Salzburg Festival – from their very own perspective. Lighting, acoustics, stage technology, painting and sculpting, sets, props, video technology, locksmithery, the wallpaper department and carpenter’s shops were scrutinised through the lens. The elaborate production processes behind each performance and the atmosphere behind the scenes are rendered visible. In their images, they combine their own artistic themes, such as »movement and changes«, dynamic black-and-white photography and creative serial concepts.