Pianist, composer, conductor, arranger, and actor, known for his blending of classical and pop styles, including compositions: Neiges, Smash, Chevauchée, Surprise, Donna, and Mouvements in the disco and pop fields. In 1974, André Gagnon released Saga, his first album, composed solely of original instrumental pieces. In 1975, the album Neiges stayed on the American Billboards Top 10 for 24 weeks and sold over 700,000 copies worldwide. In May 1976, Neiges was released in New York under the title Driven Snow and in the following year, Neiges won a Juno award for the most purchased album in Canada while his album Le Saint-Laurent rapidly reached 100,000 sold copies. In the fall of 1979, he received his first Félix award, from the Quebecois music industry in the instrumental category for the album Le Saint-Laurent. He also began to add film scores to his repertoire, among them the soundtracks to "Running" in 1979, the John Huston film "Phobia" in 1980, and "The Hot Touch" in 1981. He won Juno awards in 1978 and 1995 for Instrumental Artist of the Year. In 1981 he composed the original music for the film "Tell Me That You Love Me," a production of Astral Films. In October, he recorded "Impressions" in the famous Abbey Road studio. In February 1990, the opera "Nelligan" was released, for which he wrote the music. He released the studio-recorded double album, Nelligan. In January 1992, he composed the music for the film "The Pianist." In 1999, the album Juliette Pomerleau was released. In 2011, the album Les chemins ombragés was certified a gold album having sold 40,000 copies. He 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 was appointed an Officer of the Order of Canada in 1978 and an Officer of the National Order of Quebec in 2018.