Luc Cousineau was born on 19 September 1944 in Montreal, Quebec, Canada.[1] He was brother to François Cousineau and Jean Cousineau. He studied the cello in Sherbrooke, and then the saxophone with Arthur Romano and the double-bass with Roland Desjardins[1] at the école de musique Vincent-d'Indy.[1][2]: 99 There, he met the singer Lise Vachon, whom he would later marry.[1]
He was an accompanist for artists like Stéphane Venne, Isabelle Pierre and Renée Claude.[2]: 99 He then formed the singing duo Les Alexandrins with Lise Vachon, accompanied by Cousineau on the guitar. They made their debut in 1965.[1] It was successful, and was dissolved in 1973.[2]: 99 After 1973, Luc Cousineau pursued a career as a composer,[1] focusing on audiovisual productions and commercials.[2]: 99 His popularity grew as he published LPs such as Cousineau (1973) and Comme tout le monde (1981).[1]
In 1975, Cousineau founded the record company Airedale.[2]: 99 In 1978, he founded Les Productions Luc Cousineau, and in 1986, Les Auditifs (1986).[1]
In 2000, he made a comeback with the disc J'laisse aller, followed by Jusqu'à ton monde in 2001.[3]
In 2013, Luc Cousineau was diagnosed with amyotrophic lateral sclerosis (ALS), a degenerative incurable disease. He published the album Tant qu'il y aura une chanson in 2015, and parts of the profits from disc sales went to research on ALS. He died on 6 March 2017 in Estrie.[3]
By his death, he had composed over 200 songs over 50 years. He had at least two children.[3]