Concerts are analyses of nature and sound structures, of the physicality of sound, ways in which it is created and transformed by our surroundings. The electronics used expose natural sound properties, amplifying its interaction with space, objects, through which it is propagated, with itself also. The most important instrument becomes the speaker and the microphone, and the audience through their physical presence has the chance to take part in transforming the ritual of sound into the ritual of listening. This music concert-show represents something unplanned by the composers – created by the Warsaw Autumn meeting of several generations of artists sensitive to sounds of own lives.