George Balanchine’s “Raymonda Variations” is not a story ballet but a dazzling celebration of pure dancing. Inspired by the grand 19th-century ballet Raymonda, Balanchine took highlights from Alexander Glazunov’s radiant score and created a work of sparkling solos, a graceful pas de deux, and sweeping ensemble moments.At its 1961 New York City Ballet premiere, one reviewer wrote:“It is certainly one of those ballets that best shows precisely what ballet is about. It is nothing but dancing, but d