 With Charpentier's help, he composed an opera, "Philomèle", performed at his residence in 1694; and in 1705 the prince wrote a second opera, "Penthée", to a libretto by the Marquis de La Fare.In the late 1690s Chartres studied the viol with Antoine Forqueray the elder.Meanwhile, he was studying diplomacy and riding, as preparations for a military career.