Anne Teresa De Keersmaeker (b. 1960) is a renowned Belgian choreographer who over nearly four decades has created a legendary and internationally lauded oeuvre, a continuous exploration of the relationship between dance and music that borrows formal principles from geometry, mathematical models, natural phenomena, and social structures. The photographer Anne Van Aerschot served as De Keersmaeker's artistic assistant for many years, and from that position she enjoyed an immediate and intimate perspective on the development of the choreographer's work. This book is the first to gather and publish Van Aerschot's photographs of De Keersmaeker's choreography. These dynamic images provide a unique understanding of De Keersmaeker's universe of dance, and offer insight specifically into the artistic innovation that De Keersmaeker began in 2007, when, guided by new choreographic principles, she developed entirely new working methods.