Originally created as an invitation by Rolling Stone magazine in 1977, as part of a gala issue celebrating the magazine's move from San Francisco to New York, which featured literary and art contributors honoring it's new home. Cage constructed his waltzes as a series of 49 multi-colored triangles superimposed on the Hagstrom map of New York City, each point derived by the use of chance operations. Wanting to celebrate Cage's memory, Don Gillespie decided to collect the sights and sounds from the locations specified in "49 Waltzes." This ambitious project of filming Cage's 147 specific locations in New York's five boroughs took one year to complete.