sound sources include field recordings of airport announcements, hammering on metal plates at the former kabelwerk oberspree, berlin, several sounds captured inside the large radio antenna dome at teufelsberg, berlin, dripping water at the botanical garden florence, air condition systems and turbines in las vegas, frankfurt and tokyo, walking on rocks in joshua tree national park, wind from the grand canyon, a friends answering machine, a printer, conversations via mobile phones, typing on an old macintosh keyboard and recordings from tunnel works in switzerland.