Chichester Psalms significantly features the harp; the full orchestral version requires two intricate harp parts. Bernstein completed the harp parts before composing the accompanying orchestral and choral parts, thus granting the harpists a pivotal role in realizing the music. In rehearsals, he is noted to have requested that the harpists play through the piece before the rest of the orchestra to emphasize the importance of the harps' role.
