Matons led the Experimental Dance Group in the late 1930s. His dancers included a young Rebecca Lepkoff. He choreographed for the 1939 Worlds Fair in New York, creating the dance for "Railroads on Parade - Drama of Transport". The music for this was written by Kurt Weil. Weil had started the score in spring 1938. It was written as a Circus Opera using the elements of theater music from opera to circus. Matons hired Rebecca Lepkoff for the Worlds Fair show and as he could pay a decent wage, uncommon at during the depression, Lepkoff used this money to buy her first camera, starting her photography career.