Gérard-Philippe Broutin, whose Lettriste work began in 1968, was initially attracted by the joint visual and sound structures that Lettrisme uncovered. These pieces bear evocative titles such as "Mystic Assyrian Chant," and "Monolettrie to P. Mondrian," and delve into the realm of sound hermeticism.

Broutin's Lettriste painting dates from the same period, combining lines of writing in Latin letters with hieroplyphic ideograms, empty spaces, and eventually a personal alphabet based on notional signs representing different plants.

Broutin has travelled to the United States, where he created the virtual multi-media sculpture, "The Inhabitants of New York" constitute the largest group of living sculpture ever created (1976-1982).