Choreographer Christopher “Wheeldon may well, like George Balanchine, expand the boundaries of what is considered classical ballet. Taken as a whole, Mr. Wheeldon’s ballets are like the rooms of a mansion. Some are grand, some simple, and most of them are inviting. The rooms of ‘Liturgy,’ ‘Klavier’ and most of all ‘After the Rain’ look out not only on the gentle hills and craggy precipices of classical ballet, but also on the wide-open sea of a ballet that is rooted in classicism, as Balanchine’s innovations were, but also enriched and transformed by modern dance of the 20th and 21st centuries.”