Toni Bentley, a dancer for George Balanchine, the greatest ballet maker of the 20th century, tells the story of Serenade, his iconic masterpiece, and what it was like to dance--and live--in his world at New York City Ballet during its legendary era. "Reading Bentley's Serenade made me feel as alive as I felt on the stage the moment that I fell in love with ballet.... [A] delicate balance of personal memoir, rarefied...