Close your eyes and listen: For once the Gewerbemuseum dedicates itself wholly to the world of sounds, the loud and the quiet, the shrill and the smooth. We are surrounded by a constant «everyday music» without really noticing it. For the most part we only become aware of it if we perceive it as noise.  «Hertzflimmern» makes us realise the hidden beauties of the side noises and draws an acoustic image of the present time. The random interaction of noises and words awakens images and memories; an acoustic map invites to a sound journey through Switzerland; acoustic sceneries and stories can be assembled from noises and sounds with the «hearing organ»; or sound generation for certain film sequences can be tried out individually in the «factory».