TOP AND FIRST LEFT -  H.S.Williamson I knew as an artist and designer. Such was his passion for for music that he was responsible for this wonderful booklet produced by the Sylvan Press, c1960 and printed in lithography by Cowell's of Ipswich. It provided in sequence a clear and devoted account of the sheer excitement when an orchestra take up its instruments to play. On p.3 he has devised a diagrammatic representation of patterns in sound and vision of the Orchestral playing. It is as visual and clear as anything by the pioneer of visual representations of music Oskar Fischinger.

RIGHT Douglas R.Hofstadter, Metamagical Themes , Penguin London 1986, see "Pattern, Power and Poetry in the Music of Frederic Chopin" p.173 ff.