A ballet master (also balletmaster, ballet mistress [increasingly archaic], premier maître de ballet or premier maître de ballet en chef) is an employee of a ballet company who is responsible for the level of competence of the dancers in their company. In modern times, ballet masters are generally charged with teaching the daily company ballet class and rehearsing the dancers for both new and established ballets in the company's repertoire. The artistic director of a ballet company, whether a male or female, may also be called its ballet master. Historic use of gender marking in job titles in ballet (and live theatre) is being supplanted by gender-neutral language job titles regardless of an employee's gender (e.g. ballet master in lieu of ballet mistress, wig master as an alternative to wig mistress). History of the position Especially during the early centuries of ballet troupes and ballet companies from the 18th century until the early 20th century, the position of first ballet master, referred to traditionally as the premier maître de ballet en chef or more simply as the maître de ballet, was the undisputed head of the company who acted as chief choreographer and artistic director. His duties included creating ballets, dances in operas, commissioning music, and presiding over the teaching of the dancers and style desired. It was this head ballet master who had the responsibility of the artistic directorship of a particular group of dancers or of a theatre. Since the early 20th century, primarily after the disbandment of the original Ballets Russes, the title has been used more to describe the master teachers/assistant directors of a ballet company, (previously known as second ballet master), with the head of a company being referred to as the artistic director. Famous ballet masters Pierre Beauchamp (1631–1705), first ballet master of the Ballet du Théâtre de l'Académie Royale de Musique in Paris from 1673 to 1687, he invented the comédie-ballet with Molière and Jean-Baptiste Lully, codified the five positions of the feet and created a system of dance notation. Jean-Baptiste Landé (died 1748), ballet master in Russia from 1733 to 1747; he is known as the parent of the Russian Mariinsky Ballet. Jean-Georges Noverre (1727–1810), ballet master of the Stuttgart Ballet from 1760 to 1767, of the Wiener Hofoper in Vienna from 1768 to 1775 and of the Ballet du Théâtre de l'Académie Royale de Musique from 1776 to 1781. Between 1758