Martin jan’‹ek Sound Passages Various sites selected for their special sound character - a railway bridge, the PetÞ’n lookout tower, the ëof’n sluice gate, etc. - will be equipped with metal sound passages in the form of funnels. These will amplify the sounds hidden in the materials. A further phase may be the transposition of these hidden inner sounds into the public space - by radio, television or Internet.