Long sold out. Christina Kubisch's 1994 installation Sechs Spiegel is one of her better-known pieces, and the sound was recorded and released as a CD. The piece used the architectural proportions of the German building the Ludgwigskirche to determine the rates of repetitions and pauses in vibrating drinking glasses.60 minutes of nothing but rubbed glass. Documentation of the installation in the Ludwigskirche Saarbrücken (18.12.94 - 29.01.95). Comes with a worth-to-read booklet documenting the installation.