For unaccompanied double choir (SATB, SATB), or a brass choir may by used to accompany or replace Choir II, in which case the keyboard should play the part for Choir I only. In unaccompanied choral performance, this work may be sung at a lower pitch than is indicated (the original is a perfect fourth lower). Latin and English words. Includes parts for brass choir (trumpet I, trumpet II, trombone I, trombone II).