In the mid-1970s he formed an avant-garde folk-rock group called Conventum with René Lussier, Jean Derome, Jean-Pierre Bouchard, Jacques Laurin, Bernard Cormier and poet Alain-Arthur Painchaud.
[1] They released two albums, À l'Affût d'un Complot in 1977 and Le Bureau Central des Utopies in 1979.
Les 4 Guitaristes de l'Apocalypso-Bar was a concept band that Duchesne said was from post-apocalypse Canada "inspired by the ghost of Jimi Hendrix".
[2] After the success of Les 4 Guitaristes de l'Apocalypso-Bar,[2] Duchesne returned to FIMAV in 1989 to premier "his most ambitious work ever",[1] L' Ou 'L,[4] a composition that explored different styles of chamber music.
Duchesne returned to FIMAV for its 21st edition in 2004 to premier Cordes à danser, a new project of his featuring a string quartet and a "power trio" of guitar, bass and drums.