In the 1894 pamphlet Anatomie et physiologie de l’orchestre, co-authored by the popular occult writer Gérard Encausee (writing under his esoteric pseudonym Papus) and the young Frederick Delius, the four instrumental groups—strings, brass, woodwinds, and percussion—were associated respectively with God, the head, and the nervous system; man, the chest, and the arterial system; woman, the chest, and the venous system; and nature, the abdomen, and the lymphatic system.
Further subdivisions and associations were outlined in preparation for a larger prescriptive work for composers that never materialized.
This according to “Sound as symbol: Fin de siècle perceptions of the orchestra” by Eric Frederick Jensen (The music review LV/3 [August 1994] pp. 227–240). Above, Papus in the back room of the Librairie du Merveilleux; below, the opening of Delius’s Appalachia from 1896, presumably an illustration of his application of such theories.
Today, on Delius’s 150th birthday, let’s eavesdrop on the reminiscences of his friend Percy Grainger.
“Composer never had truer colleague than I had in Frederick Delius, and when he died I felt that my music had lost its best friend.
“Our outlook on life was very similar, our artistic tastes met at many points. Both of us considered the Icelandic sagas the pinnacle of narrative prose. Both of us knew the Scandinavian languages and admired the culture of Scandinavia as the flower of Europeanism.
“Both of us worshipped Walt Whitman, Wagner, Grieg, and Jens Peter Jacobsen. Both of us detested music of the Haydn-Mozart-Beethoven period. ‘If a man tells me he likes Mozart, I know in advance that he is a bad musician’ Delius was fond of saying.
“One year he would ask for Bach; the next year he would say ‘You know, Bach always bores me.’ But Chopin and Grieg he never turned against. He preferred Ravel to Debussy. He had no patience with Richard Strauss, Mahler, or Hindemith.”
This from “About Delius”, reprinted in Grainger on music (Oxford: Clarendon, 1999, pp. 361–368). Above, Grainger and Delius in 1923. Below, Delius’s On hearing the first cuckoo in spring.