The centerpiece of the evening was Monotones I and II, set to music by Eric Satie with choreography by Frederick Ashton. Each Monotone is a pas de trois; one for two women and a man; the other for two men and a woman with II made first. Both pieces look very simple but they aren’t, as each contains a lot of arabesques and attitudes as well as other moves requiring hard-to-sustain balances. The dancers stand out from the background lit by Michael Korsch—the first group in yellowish-green from neck to toes; the second in white, both with what look like squashed bathing caps adorned with jewels on their heads. (Originally, the head coverings were different and, apparently, more stylish.) The piece is classic and remote; at times the dancers made me feel they were under the sea, moving their arms and legs against the weight of water.