The influence of association plays no necessary part in these pleasurable influences, for Féré's experiments show that an unmusical subject responds physiologically, with much precision, to musical intervals he is unable to recognize. R. MacDougall also finds that the effective quality of rhythmical sequences does not appear to be dependent on secondary associations (Psychological Review, January, 1903).
R. T. Lewis, in Nature Notes, August, 1891.
Cornish, "Orpheus at the Zoo," in Life at the Zoo, pp. 115-138.