RAMEAU, Jean-Philippe (?1683-1764). Traité de l'harmonie reduite à ses principes naturels. Paris: Jean-Baptiste-Christophe Ballard, 1722. A few woodcut diagrams, woodcut musical notation in the text, with the 9 leaves of Supplement. (A few leaves browned, tear in P1). [Bound with]: Nouveau systême de musique theorique. Ibid., 1726. 2 folding engraved plates, woodcut musical notation in the text, with the final advertisement leaf. (Occasional light browning). 2 works in one volume 4° (254 x 190mm). Contemporary French mottled calf (rebacked with original gilt spine preserved, corners repaired, rubbed).

RAMEAU, Jean-Philippe (?1683-1764). Traité de l'harmonie reduite à ses principes naturels. Paris: Jean-Baptiste-Christophe Ballard, 1722. A few woodcut diagrams, woodcut musical notation in the text, with the 9 leaves of Supplement. (A few leaves browned, tear in P1). [Bound with]: Nouveau systême de musique theorique. Ibid., 1726. 2 folding engraved plates, woodcut musical notation in the text, with the final advertisement leaf. (Occasional light browning). 2 works in one volume 4° (254 x 190mm). Contemporary French mottled calf (rebacked with original gilt spine preserved, corners repaired, rubbed).

FIRST EDITIONS of two important theoretical works by the leading French composer (particularly of dramatic music) of his time and an important innovator in harmonic theory. 'Hardly a theorist from the period or from succeeding generations who wrote on harmony escaped the need to relate his work to Rameau's, and the development of several national schools in music theory can be traced directly to his influence (notably in France, England and Germany)'. Grove pp. 559-572.