The American-born choreographer William Forsythe--who was the Director of the celebrated Frankfurt Ballet from 1984-2004 and now heads his own Frankfurt-based independent ensemble, The Forsythe Company--is recognized internationally as one of the world's foremost choreographers and widely credited with revitalizing classical ballet for the twenty-first century. His ideas have engaged with and contributed to all of the most significant international artistic currents of our time--from performance and visual arts to architecture and interactive multimedia. Quite simply, his choreographic vocabulary has redefined body, space, time and movement. In 1994, The ZKM/Center for Art and Media Karlsruhe cooperated with Forsythe to produce a "digital dance school" in the form of an interactive computer installation. That project was originally released as the CD-ROM William Forsythe: Improvisational Technologies: A Tool for the Analytical Dance Eye. This revised, renamed, specially priced edition features some 60 video chapters in which Forsythe demonstrates and comments upon the essential principles of his motional language. Examples, danced by members of the Frankfurt Ballet, can be called up as required. Also included is a solo performance by Forsythe, filmed in 1996 by Thomas Lovell Balogh.