E-flat clarinet
In addition to the solo violin, the score calls for: piccolo, 2 flutes, 2 oboes, cor anglais, 1 E-flat clarinet, 2 clarinets in A/B♭, 3 bassoons (third doubling contrabassoon), 4 horns, 3 trumpets, 3 trombones, tuba, timpani, bass drum, and strings.