Boris Kochno

Boris Kochno (January 3, 1904, Moscow — December 8, 1990, Paris) was a Russian poet, dancer and librettist. He was close with Karol Szymanowski who gave him as a gift a Russian translation of the chapter The Symposium from Efebos, the composer's unpublished novel. Szymanowski also dedicated four poems to the youth. In 1920 he became Sergei Diaghilev's secretary, librettist, and eventually main collaborator. They were also briefly lovers. Kochno wrote the libretto of Mavra (1921), the Fâcheux (1924), La Chatte (1927) and of the Fils prodigue (1929). He also had an affair with Cole Porter in 1925, with whom he carried on a lengthy correspondence.

Upon Diaghilev's death he and Serge Lifar tried but failed to hold the Ballets Russes together. The two inherited part of Diaghilev's archives and collections, which Kochno completed and part of which was acquired by the Bibliothèque nationale de France. His later career included a position as Monte Carlo ballet director, where he became an influential figure in post World War II French ballet. In 1933 he co-founded, together with George Balanchine, the short-lived company Les Ballets 1933, which made its debut that summer at the Théâtre des Champs-Élysées. He and Edward James commissioned that year Brecht and Weill's last collaboration, The Seven Deadly Sins, which Balanchine produced, directed and choreographed.

At the end of World War II, Kochno entered into collaboration with Roland Petit, with whom he founded the Ballets des Champs-Élysées. There are a number of published works by him. One, Diaghilev and the Ballets Russes, is a record of the Diaghilev era. The other, Christian Bérard, is a scrapbook of reminiscences about, and art of, his former friend and collaborator.