- Music by: Vittorio Rieti
- Choreography by: George Balanchine, staged by John Taras
- Principal Casting:
September 26, 27 mat: Wendy Whelan, Robert Fairchild, Sara Mearns, Amar Ramasar, Meagan Mann*, Likolani Brown, Devin Alberda, David Prottas, Lauren Lovette, Craig Hall, Daniel Ulbricht (*first time in role)
October 4, 5 mat: Wendy Whelan, Robert Fairchild, Faye Arthurs, Aaron Sanz*, Sara Adams, Sarah Villwock, Austin Laurent, Ralph Ippolito, Lauren King, Antonio Carmena, Troy Schumacher (*first time in role)
Deceit, desire, and death shadow La Sonnambula's aristocratic masked ball, haunting with the image of a beautiful sleepwalker.