The Harmony Between Rousseau's Musical Theory and his Philosophy

Rousseau is best known as the author of philosophic works, but he was a musician and musical theorist before he burst onto the European literary scene with his First Discourse. While he earned celebrity as an anti-philosophical philosopher, he continued to consider music as his primary vocation and avocation throughout his life. Rousseau testifies to the harmony between his musical work and his philosophy in his Dialogues, where he explains that his musical writings and compositions are animated by the same feelings and ideas as all of his works—that they too are based on the principle of his “system” that “man is good although men are wicked.” ¹ His mature musical theory not only incorporates his philosophy of human nature and development but also extends it through an examination of the role of the passions in human communication. Rousseau’s musical theory is an important, yet often overlooked, facet of his philosophy.

The relationship between Rousseau’s musical theory and his philosophy as a whole has seldom been extensively analyzed. ² His only widely known writing relating to music is the Essay on the Origin of Languages, but even that work has in general not received a full accounting because it has rarely been interpreted in light of his other musical writings. The Essay emerged out of both the Second Discourse and the contemporaneous musical polemics of the mid-1750s. The simultaneous elaboration of his “system” and his continued work on music was the context in which Rousseau’s mature musical theory developed. After an account of Rousseau’s pre-systematic musical writings and a discussion of the development of his musical theory, I will turn to an examination of the Essay. Finally, I will conclude by discussing Rousseau’s novel aesthetic theory and its impact.

Rousseau’s Presystematic Musical Writings

“Jean-Jacques was born for music.” ³ Rousseau’s musical writings might be characterized as his attempt to account for his native love for music. In his Confessions he speaks of “the taste or rather passion for music” that he had almost from birth and says that it was while in Italy, after running away from Geneva at age sixteen, that his passion began to declare itself. ⁴ Rousseau increasingly indulged his love for music over the next several years, although six months in a choir school at about the age of seventeen was almost the only formal musical instruction he received. He acquired and painstakingly mastered Rameau’s Treatise on Harmony, and studied informally with a young organist with Italian training, recalling how he compared his friend’s “principles” to those of “my Rameau.” ⁵ At least in retrospect, then, Rousseau noted the contrast between French and Italian music that would later bring him into conflict with his youthful hero.

Rousseau soon took up the profession of a music teacher and copyist, a trade to which he would return after abandoning philosophy. Copying music acquainted him with the difficulty of the ordinary visual system of notating music, and he therefore devised a numerical system. It was with his system of notation and a play, Narcisse, that Rousseau set out for Paris in 1741. He gained an audience for his “Plan Regarding New Signs for Music” (1742) at the Academy of Sciences, and while it was favorably received, the report of a select committee concluded that his system was not entirely new and was less practical in most respects than the ordinary system. ⁶ Rousseau was nonetheless convinced of his system’s utility and published it as the Dissertation on Modern Music (1743). This work contains a digression on musical expression where he explains that we are not “touched” by sounds themselves but by the harmonic relationships they have among them. He sends his reader to Rameau’s writings, where the source of musical expression is “sufficiently explained.” ⁷ In his mature musical writings Rousseau expounds a theory explicitly opposed to Rameau’s theory of musical expression.

Several incidents in the next decade before the discovery of his “system” seem to have contributed to Rousseau’s subsequent break with Rameau. [End...