A ballerina stretches her arms out to each side, and the dancer behind takes one in each hand. They begin to dance: her legs jet out on pointe, in line with her arms. She twists and he follows her movements attentively. They are angular, strong and vigorous. After no more than 30 seconds of dance, Choreographer William Forsythe calls them to a halt, pleased.
"What would you have liked to do differently," he asks the couple.
