Composer, born in Dijon, France. He became an organist, and in 1722 settled in Paris, where he published his Traité de l'harmonie (1722, Treatise on Harmony), a work of fundamental importance in the history of musical style. He wrote many operas, notably Hippolyte et Aricie (1733) and Castor et Pollux (1737), as well as ballets, harpsichord pieces, and vocal music.