Sébastien de Brossard

Sébastien de Brossard (; 12 September 165510 August 1730) was a French music theorist, composer and collector. Life Brossard was born in Dompierre, Orne. After studying philosophy and theology at Caen, he studied music and established himself in Paris in 1678 and remained there until 1687. He briefly was the private tutor of the young son of Nicolas-Joseph Foucault, a collector and bibliophile. He became a very close friend to Étienne Loulié, one of the musicians who performed the Italianate works that Marc-Antoine Charpentier was composing for Marie de Lorraine, Duchess of Guise, better known as “Mademoiselle de Guise.” While in Paris, he also became close to Samuel Morland, an English inventor and polymath who was working with Joseph Sauveur, a mathematician, on the Machine de Marly. It was during talks about music with Morland that Brossard deduced the role that a major third versus a minor third play in differentiating a major scale from a minor scale. These contacts shaped Brossard’s future preoccupations. He enthusiastically embraced Italian music; he became a collector of musical manuscripts and music treatises; he perfected his knowledge of musical theory; and autodidact th