He was involved in Diaghilev's "Ballets Russes" from the first season in Paris, 1909. He wrote scenarios ("librettos") for Fokine's "Le Dieu Blue" in 1912, Massine's "Parade" in 1917 and Nijinska's "Le Train Bleu" in 1924. He also design company posters, and worked for several other ballet companies. He wrote many articles on dance, and made sketches of many in Diaghilev's circle.