Even before you took in the individual pieces of Rebecca Horn’s installation, waves of mechanically repetitive knocking, banging, rattling sounds hit your ears, sounds that created a secret relationship among the works and accompanied the visual connections like a subterranean echo. This echo filled the space with an atmosphere that tugged at your feelings without your being able to pinpoint exactly what it was that moved you. No one could have left these rooms without feeling that their senses had been heightened to the utmost, like the narrator in Edgar Allan Poe’s “The Tell-Tale Heart.” The