 Chartres was reared alongside Louis de Rouvroy, duc de Saint-Simon, later famous for his memoirs and defense of the rights of the peerage of France; Saint-Simon often accompanied the duke, and his wife was later a lady-in-waiting to Philippe's daughter, Louise Élisabeth d'Orléans, duchesse de Berry.Next, collaborating to link physics and music, Sauveur and Loulié demonstrated vibrating strings and the Galilean pendulum, and how the mathematical principles on which these devices depend are related to music.Finally, in 1693 the prince studied composition with Marc-Antoine Charpentier.