Leonid Fyodorovich Myasin, better known in the West by the French transliteration as Léonide Massine, was a Russian choreographer and ballet dancer. Massine created the world's first symphonic ballet, Les Présages, and many others in the same vein. Besides his "symphonic ballets," Massine choreographed many other popular works during his long career, some of which were serious and dramatic, and others lighthearted and romantic. He created some of his most famous roles in his own comic works, among them the Can-Can Dancer in La Boutique fantasque (1919), the Hussar in Le Beau Danube (1924), and, perhaps best known of all, the Peruvian in Gaîté Parisienne (1938). Today his oeuvre is represented by his son Lorca Massine, who stages his works around the world.

Choreography is the art or practice of designing sequences of movements of physical bodies in which motion or form or both are specified. Choreography may also refer to the design itself. A choreographer is one who creates choreographies by practising the art of choreography, a process known as choreographing. It most commonly refers to dance choreography.