Theo Botschuijver & Jeffrey Shaw "Laser performances"

'Botschuijver and Shaw's work with lasers began in 1972 under the auspices of the English band Genesis. The laser effects system they created, was used by Genesis on two world tours and would be further developed for their tours to come. This laser system was able to create large 3D light forms in space, by means of fast spinning and scanning of the laser beam, which then materialized theses forms on dust or smoke in the air. The performance for De Appel was the first time this system was shown independant of Genesis and on its own terms as a generator of light sculpture. Sound was used during the performances, both to control and controlled by the movement of the laser beam.' (Invitation De Appel, Febrary 1978.)