Two plotless Balanchine classics and a narrative ballet from Christopher Wheeldon comprise this program. Divertimento No. 15 is a bravura series of variations marked by complex and captivating classical steps, while the ebullient Tschaikovsky Pas de Deux is a thrilling dance that showcases Balanchine’s ability to evoke a world of romance with just two dancers and less than ten minutes of music. For Carnival of the Animals, Wheeldon, employing a scenario written by the actor John Lithgow, was inspired by New York’s Museum of Natural History to create a delightful fantasy in which a young boy dreams that his family and friends have all been transformed into fauna.