Who commissioned the 1919 ballet written by the creator of the role of the Can-Can Dancer in "La Boutique fantasque"?
The Three-Cornered Hat: El sombrero de tres picos ("The Three-Cornered Hat" or "Le tricorne") is a ballet choreographed by Léonide Massine to music by Manuel de Falla, commissioned by Sergei Diaghilev and premiered complete in 1919. Léonide Massine:  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).
Sergei Diaghilev