WE may now proceed to the main question, On what principles is the selection of sounds made, to form an allowable musical scale?
We are met, at the outset, with the fact, abundantly proved, that the selection has varied considerably among different nations and at different times; and hence it is necessary to notice briefly some cases of the kind, and particularly to ascertain something about the origin of the form of scale we at present use.
These historical considerations are by no means irrelevant to the theory of music, for they often throw light on obscure points of principle. We are too apt in music, as in many other things, to confine our thoughts within____________________
An Explanation of the Modes or Tones in the Ancient Grecian Music. By Sir Francis Haskins Eyles Styles, Bart., F. R.S. Phil. Trans., 1760.
A General History of Music, from the Earliest Ages to the Present Period. By Charles Burney. London, 1979.
Article by Professor Fortlage on Griechische Musik in Ersch and Grüber's Allgemeine Encyclopædie der Wissenschaften und Künste. Leipzig, 1862.
Harmonik and Melopöie der Griechen. By R. Westphal. Leipzig, 1863.
Histoire Générale de la Musique. Par E. T. Fétis. (Vol. iii. Music of Asia Minor and Greece. Paris, 1872.)
The History of Music. By Wm. Chappell , F. S.A. London, 1874.
Histoire et Théorie de la Musique de l'Antiquité Par F. A. Gevaert. Vol. I. Gand., 1875.
Euclid's Treatises, Eιςαγωγέ A'ρ μονικέ, and Kατατομέ KανóνΟς. Published in his Complete Works, with a Latin translation by Gregory. Oxford, 1703.
No attempt is made in these pages to give any complete account of the elaborate Greek systems; only those points are mentioned that have an immediate bearing on the theory of modern music.