E-flat clarinet
The work is composed for solo cello and an orchestra comprising two flutes (2nd doubling piccolo), two oboes, two clarinets, (2nd doubling E-flat clarinet and bass clarinet), bassoon, contrabassoon, four horns, three trumpets, three trombones, tuba, timpani, three percussionists, piano (doubling celesta), harp, and strings.