I Ching, The Book of Changes provided the inspiration for Torse, which utilized the numbers one to sixty four, both in its spatial plan (conceived as a square 8 x 8), and the movement phases (which constituted the language of the piece). The title of this ballet referred to the use of the torso throughout the dance. There were five basic back positions featured in "Torse:" upright, arch, twist, tilt and curve. The music was by Maryanne Amacher, and Mark Lancaster designed the costumes: the women wore black leotards and yellow tights, and the men wore yellow leotards and black tights.