Roy Harris's Symphony No. 3 is a work written in 1939 and premiered by the conductor Serge Koussevitzky.
Harris wrote this symphony on a commission from Hans Kindler but he gave it to Serge Koussevitzky instead (Stehman 1984, 63–69). It has been described as "the quintessential American symphony" (Canarina 1993,) and "the most widely performed and recorded of all American symphonies" (Butterworth 1998, 84).
The material that eventually became the opening of the Third Symphony was initially meant to be a violin concerto for Jascha Heifetz, but the commission fell through and Harris decided to turn it into a symphony. The point where the strings enter on middle C was to have been the solo violin's entrance (Clark and Schuman 1986, 334).
The score was published by G. Schirmer in 1940.
The music is scored for 3 flutes (the third doubling on piccolo), 2 oboes, English horn, 2 soprano clarinets, bass clarinet, 2 bassoons, 4 horns, 3 trumpets, 3 trombones, 1 euphonium, 1 tuba, timpani, bass drum, cymbals, triangle, xylophone, vibraphone and strings.