Over the course of his career, Stravinsky called for a wide variety of orchestral, instrumental, and vocal forces, ranging from single instruments in such works as Three Pieces for Clarinet (1918) or Elegy for Solo Viola (1944) to the enormous orchestra of The Rite of Spring (1913), which Copland characterized as "the foremost orchestral achievement of the 20th century"
He wrote ensembles in a broad spectrum of classical forms, ranging from opera and symphonies to piano miniatures and works for jazz band. Stravinsky achieved fame as a pianist and conductor, often at the premieres of his works.