“Music, said Grisey (who died in 1998 at 52) is made with sounds, not notes. You might say that Ms. de Keersmaeker’s movement in Vortex is made with movement, not steps.
… Nothing in this music is arbitrary, and you can only marvel at the prowess and rigor of the musicians, playing through this thicket of complexity without a score or a conductor.
… That Ms. de Keersmaeker could even contemplate choreographing to this music, and then go on to make it legible and thrilling, is a triumph.” – Roslyn Sulcas / The New York Times