In 1977 Bruce created a four-channel installation in the East High bell tower that send a cloud of resonance and music over the neighborhood of the Spree Festival of the Arts, in Denver, Colorado. The sounds were recorded at The TANK, an abandoned water tank in Rangely, Colorado- one instrument at a time on a Nakamichi 500 cassette machine. This was the first recording project in The TANK. Four Klipsch La Scala speakers, donated by Listen Up, were laboriously carried to the tower and oriented to the cardinal points. “Chimes” of various TANKSOUNDS were played on the hour, and Sun Song played at the beginning and end of each day. In the days before Sound Art, it was called a Musical Sculpture.