First site-specific work based on the idea of diegetic and non-diegetic sounds (in a film, those sounds whose source is visible on the screen or whose source is assumed to be present in the action of the film). When listening to a certain soundscape while observing a visual scene, our mind tries to reconstruct what is happening. In this reconstruction of what happens or has happened we are not simply trying to discover an external situation. We are projecting our own psychological background onto it.