Architecture forms all sounds we hear. Urban architecture is a sound box; it shapes a space, wherein the range of sounds which surround us is resounded and reflected. Stadtmusik deals with sounds in cities, by analysing sound structures which are triggered by urban buildings and facilities. They focus on the aspect of movement in the city, which reinforces a dynamic experience of the urban soundscape: particular sounds emerge through movement, sound and its timbre evolve from material and space.