The new glass building of the Akademie der Künste, with its many stairways and balconies, is exciting. Not all areas are accessible to the public, some prove to be reflections, mirages that one can only walk through with the eyes. Passaggio – Staccato is a site-specific installation with foil, wood and leather scent, with which I temporarily accentuate the staircases of the controversial building: underneath the stairs one can see floor plans of the building's architectonic elements as small foil cut-outs. From a seat in the café, they mirror the dark floor as »black holes«, and when walking past them, they dazzlingly reflect the light that shines in through the glass wall. The long bridge above the café is audible, but the staccato of the wooden slats sounds only when someone walks on the elongated unstable floor installation. It can be walked along like a long uneven catwalk (or better »soundwalk«) that challenges the walker's sense of balance, acoustically registering every movement. Or it can be used to create sound compositions, since rhythmic patterns or free rhythms can be played / danced as solos or by ensembles on the spread-out percussion instrument. – En route to the roof terrace, a fleeting reference to the World Cup can be perceived as an olfactory stimulus. (We still speak of the »leather«, even though footballs have long been made out of synthetics.) This immaterial installation is like an illusion, like the »artificial spaces« of the building on Pariser Platz.