Harmony — Treatise On

: Rameau argued that every chord has a "root" or fundamental note, regardless of which note is in the bass. This allowed for the identification of a core harmonic identity.

: He established the "natural" relationship between chords, particularly the movement between the tonic and the dominant , which remains the backbone of most Western music today. Structural Breakdown Treatise on Harmony

. Before this, theorists viewed these as entirely different intervals above a bass note. : Rameau argued that every chord has a

Rameau's "deep content" is centered on three revolutionary concepts that redefined how we understand music: Structural Breakdown

: Focuses on the practical art of playing from a figured bass on instruments like the harpsichord or organ. Availability and Modern Use Treatise on Harmony (Dover Books On Music: Analysis)

: Provides rules for creating music, including how to handle chord progressions and modulation.