Robert Moses, master urban planner, commissioned Grofé to compose the music for the 1964 New York World's Fair. The fair's opening day's big musical performance was Paul Lavalle conducting a 94-piece orchestra in the world premiere of Grofé's "World's Fair Suite". Moses had previously commissioned Grofé to compose the theme for his 1939 New York World's Fair. Mr. Grofé was present, listening from a wheelchair, having suffered a stroke in 1961. His score was in five movements—"Unisphere", "International", "Fun at the Fair", "Pavilions of Industry" and "National".