Collasse, Henri Desmarets, André Campra, André Cardinal Destouches, and Marin Marais) had greater difficulty sustaining the interest of the public. Revivals of Lully's works were common. French composers at the Opéra generally wrote music to new librettos, which had to be approved by the directors of the company. The Italian practice of preparing new settings of existing librettos was considered controversial and did not become the norm in Paris until around 1760. One of the most important of the new works during this period was an opéra-ballet by Campra called L'Europe galante presented in 1697. Ballet In 1661 Louis XIV, who was a dancer himself and one of the great architects of baroque ballet (the art form which would one day evolve into classical ballet), established the Académie Royale de Danse, intended to codify court and character dances and to certify dance teachers by examination. From 1680 until Lully's death, it was under the direction of the great dancing master Pierre Beauchamp, the man who codified the five positions of the feet. When Lully took over the Opéra in 1672, he and Beauchamp made theatrical ballet an important part of the company's productions. The ballet of that time was merely an extension of the opera, having yet to evolve into an independent form of theatrical art. As it became more important, however, the dance component of the company began to be referred to as the Paris Opera Ballet. In 1713 an associated ballet school was opened, today known as the Paris Opera Ballet School. The Académie Royale de Danse remained separate, and with the fall of the monarchy in 1789 it disappeared. The company's names after the Revolution With the French Revolution and the founding of the Republic, the company changed names several times, dropping its association with the royal family (see the List of official company names for details), and in 1794, moved into the Théâtre National de la rue de la Loi (capacity 2800) where it took the name Théâtre des Arts. In 1797, it was renamed the Théâtre de la République et des Arts. Napoleon took control of the company in 1802 and with the declaration of the French Empire in 1804, renamed the company the Académie Impériale de Musique. With the Restoration in 1814, the company was renamed the Académie Royale de Musique. It became part of the Académie des Beaux-Arts in 1816. In 1821, the