Some of These Tapes Exist in One Copy. The Only Player Is on KaDeWe's Second Floor.

Yont Studio has built a listening booth on the second floor of KaDeWe, Berlin's century-old luxury department store, to mark a Namilia clothing collection made with Telekom Electronic Beats and the band Wet Leg. Six second-hand black leather car seats sit in a circle with headphones and cassette players, surrounded by more than 140 second-hand tapes. The piece is called Passenger, after the 1977 Iggy Pop song written during his years in West Berlin. Dezeen's Jennifer Hahn reported on it this week. It stays open until 27 September.

Coşan Karadeniz and Serdar Ayvaz, who met studying architecture at TU Berlin, built the display units from bright pink foam wedges with metal shelving and clothes rails set into them. The foam was beaten with stones and burned with flamethrowers, then finished with aluminium rods left protruding from the polystyrene in place of rebar. “It's quite manual, very Stone Age,” Ayvaz told Dezeen. The tapes were gathered from second-hand shops and private collectors by the Telekom Electronic Beats team: sets by Sven Väth and Carl Cox next to little-known world music, and a quantity of material taped off the radio. Their own account of that last category is the interesting part. Entire sets that someone recorded once, which you can only hear here.

Read as a specification, that sentence is unusual. The booth is a catalogue with an address and a closing date, assembled at a moment when every other listening surface promises that the whole library is one query away and always will be. Karadeniz calls the cassette a slow and physical ritual. Visitors are invited to bring their own tapes and leave them, so the collection on Friday differs from the collection on Wednesday, and nobody holds a complete index of it. What else changes when the thing you want to hear has somewhere to be?