Chichester Psalms is a choral work by Leonard Bernstein for boy treble or countertenor, solo quartet, choir and orchestra (3 trumpets in B♭, 3 trombones, timpani, percussion [5 players], 2 harps, and strings). A reduction written by the composer pared down the orchestral performance forces to organ, one harp, and percussion.
Bernstein stated explicitly in his writing that the part for countertenor may be sung by either a countertenor or a boy soprano, but never by a woman. This was to reinforce the liturgical meaning of the passage sung, perhaps to suggest that the 23rd Psalm, a "Psalm of David" from the Hebrew Bible, was to be heard as if sung by the boy David himself. The text was arranged by Bernstein from the psalms in the original Hebrew. Part 1 uses Psalms 100 and 108, Part 2 uses 2 and 23 and Part 3 uses 131 and 133.
The work was commissioned for the 1965 Southern Cathedrals Festival at Chichester Cathedral by the cathedral's organist, John Birch, and the Dean, Walter Hussey. However, the world premiere took place in the Philharmonic Hall, New York on July 15, 1965 with the composer conducting, followed by the performance in the Chichester Festival on July 31, conducted by John Birch.
Chichester Psalms was Bernstein's first composition after his 1963 Third Symphony (Kaddish). They are his two most overtly Jewish works. While both works have a chorus singing texts in Hebrew, the Kaddish Symphony has been described as a work often at the edge of despair, while Chichester Psalms is affirmative and at times serene.
The Psalms and the first movement in particular are noted for the difficulty they pose for the performers. For example, the opening (see illustration) is extraordinarily difficult for the choral tenors, owing to the unusually wide vocal range, rhythmic complexity, and the consistent presence of strange and difficult-to-maintain parallel 7ths between the tenor and bass parts. (The interval of a seventh figures prominently throughout the piece due to its numerological importance in the Judeo-Christian tradition; the first movement is written in the unusual meter of 7/4.)