André Gagnon has also composed music for many artists, such as Diane Dufresne (Le 304), Renée Claude (Je suis une femme d'aujourd'hui, Ballade pour mes vieux jours) and Nicole Martin (Mannequin).
He resurfaced in 1983 as a songwriter for other artists, namely Diane Dufresne, Nanette Workman and stand-up comic Yvon Deschamps.
Diane Keaton | Diane Warren | Diane Arbus | Diane von Fürstenberg | Diane Sawyer | Diane Fanning | Diane Duane | Diane Paulus | Diane Martel | Diane Lane | Diane Dufresne | Diane Baker | The Diane Rehm Show | Diane Watson | Diane von Furstenberg | Diane (film) | Diane di Prima | Diane Abbott | Diane | Diane Roberts | Diane Gilman | Diane de Poitiers | Diane Brewster | Diane Bish | Diane Birch | Leo and Diane Dillon | John Dufresne | Jennifer Diane Reitz | Hurricane Diane | Diane Ward |
Robert Charlebois, Claude Dubois, Diane Dufresne and France Castel, Christine Charbonneau were some of those artists whose careers she helped launch.
Musicians who have performed at the Outremont Theatre include: Pauline Julien, Louise Forestier, Félix Leclerc, Diane Dufresne, as Paul Piché, Richard Séguin and The Beautiful South.
She has sung backup on several artist's records, including Renée Claude and Patsy Gallant, Jean-Pierre Ferland and Diane Dufresne.