Polovtsian Dances
By May 1910 Stravinsky was discussing his idea with Nicholas Roerich, the foremost Russian expert on folk art and ancient rituals. Roerich had a reputation as an artist and mystic, and had provided the stage designs for Diaghilev's 1909 production of the "Polovtsian Dances". The pair quickly agreed on a working title, "The Great Sacrifice" (Russian: "Velikaia zhertva"); Diaghilev gave his blessing to the work, although the collaboration was put on hold for a year while Stravinsky was occupied with his second major commission for Diaghilev, the ballet "Petrushka".