Chopin's music was used in the 1909 ballet Chopiniana, choreographed by Michel Fokine and orchestrated by <answer>Alexander Glazunov</answer>. Sergei Diaghilev commissioned additional orchestrations—from Stravinsky, Anatoly Lyadov, Sergei Taneyev and Nikolai Tcherepnin—for later productions, which used the title Les Sylphides.
Who orchestrated Chopiniana?
Alexander Glazunov