With this arrangement for chamber orchestra (flute, oboe, clarinet, bassoon, horn, trumpet, trombone, timpani and strings, plus organ ad lib), smaller choirs, as well as choirs with more limited resources of space or finance, can now also perform this work. By reducing the symphonic wind and brass in particular (instead of 18 just seven single wind and brass instruments are now required), the volume of sound is more restrained, but the symphonic character and a wide dynamic range are retained. All the vocal parts (soloists and chorus) are identical with the original version, so that the vocal scores and choral scores from that version can be used.