E-flat clarinet
The oratorio is scored for Heldentenor solo, soprano, alto, tenor, and bass solos, mixed choir, and an orchestra of piccolo, 2 flutes, 2 oboes, cor anglais, 3 clarinets (doubling E-flat clarinet and bass clarinet), 2 bassoons, contrabassoon, 4 horns, 3 trumpets, 3 trombones, tuba, timpani, percussion, organ, and strings.