Ballet impresario Sergey Pavlovich Diaghilev and composer Sergey Sergeyevich Prokofiev are eminent figures in twentieth-century cultural history, yet this is the first detailed account of their fifteen-year collaboration. The beginning was not trouble-free, but despite two false starts (Ala i Lolli and the first version of its successor, Chout) Diaghilev maintained his confidence in the composer. With his guidance and encouragement Prokofiev established his mature balletic style. After some years of estrangement during which Prokofiev wrote for choreographer Boris Romanov and...