One first enters the exhibition space […] through a room with empty white walls, where visitors linger and listen to their audio guides with concentration. On the walls are the usual labels with the names of artists and the audio guide numbers. To the right of this text there would be plenty of room on the wall for a work of art. The work, however, consists only of what is heard and conjured in the imagination. Karin Sander asked artists to make works available that would not be “shown” physically but only described on the audio guide. Through these imaginary works the viewers begin to imagine the work described. What one sees […], then, is a poetic installation in which people wearing headphones stand in front of white walls and imagine art that isn’t visible – which doesn’t mean that it’s not there.
From: Harald Welzer, “ZEIGEN”, in “Nichts / Nothing”, Schirn Kunsthalle, Frankfurt am Main, 2006 (Translation: Steven Lindberg)