Machina Humana by David Hudry (1970) plunges into the heart of the industrial world of the Arve Valley in Haute-Savoie, an area known for turning and precision engineering. The piece was ordered by Archipel and the Lemanic Modern Ensemble. Contrary to robotisation, here the machine works thanks to the man who programs it. This industrial microcosm, where men and machines cohabit daily, fascinated Hudry. The confrontation takes the form of a composition of mixed music where classical instruments (processed live by electronic transformations) and concrete sounds (recorded in Arve Valley factories) intertwine.