He was appointed Garde de laBibliothèque de la Musique du Roi sometime before 1684, although in 1694 he claimed to have been working as music librarian for 30 years. Philidor occupied the position jointly with the violinist François Fossard, until Fossard's death, after which Philidor held it alone. In 1694 he and Fossard received a privilège to print music written for the court, but they only published the anthology Airs italiens.
Philidor Collection
Philidor's atelier prepared manuscript copies of much of the music performed at the Palace of Versailles during the reign of Louis XIV, as well as some dating back to the reign of Henri IV. The earliest known copy is dated 1681. Besides music performed at court, he also copied music composed for other royal patrons and aristocrats. At least nine copyists were employed, including Fossard; Philidor's son-in-law, Jean-Louis Schwartzenberg, called Le Noble; one of three Ferriers, who were wind players at court; and his son, Anne Danican Philidor, the first of Philidor's twenty-one children. Philidor manuscripts are now found in many private collections and libraries. Nicolas Roze inventoried 59 volumes in the library of the Paris Conservatory early in the 19th century. Now known as the Philidor Collection, over the years nearly half have been lost. Some of the lost volumes included music by members of the Philidor family. The remaining volumes were dispersed, with surviving copies located in libraries at Paris and Versailles, primarily the Bibliothèque nationale de France and the. A large number of manuscripts that Philidor prepared for the Count of Toulouse were owned by St Michael's College, Tenbury. When these were sold in 1978, a number of volumes returned to France.
As an instrumentalist
Philidor l'aîné was appointed to a position previously held by his uncle,, in the Cromornes et Trompettes Marines in 1659. He played oboe in the royal musketeers from 1667 to 1677; appears in librettos of Lully's ballets and operas as a player of a variety of wind and percussion instruments from 1670; played drum in the Fifres et Tambours and was a member of the 12 Grands Hautbois du Roi in 1681; was ordinaire de la musique de la chapelle from 1682; and became one of four wind players to join the Petits Violons in 1690. In 1714 he owned 33 instruments, including oboes, flutes, recorders, bassoons, oboe musette, and drums.
As a composer
He probably composed occasional pieces throughout his career and began composing for the stage after Lully's death in 1687. He may have hoped to be appointed to Lully's post of surintendant of the king's music, but in 1689 the position went to Michel-Richard de Lalande instead.
