Daniel Constantineau started to study music at the age of 12 and to compose at the age of 16 years old. His first musical works were created at the Camp musical de Lanaudière, opening him the doors to the Conservatoire de musique de Montréal, which he attended from 1975 to 1985. There, he studied theory, composition and orchestra conducting, as well as the clarinet, the piano, singing and electro-acoustic composition.
From 1985 to 1987, Daniel Constantineau improves himself in orchestral conducting with Charles Dutoit and Serge Garant, becoming the only Quebecer to be formed simultaneously by these two masters. Fellow of the Department of Cultural Affairs of Quebec, he participated, during the same period, in internships at Tanglewood, Domaine Forget and Art Experience Conducting Symposium.
During his studies in orchestral conducting, he started to compose incidental music — television, radio, theater, movie — from which emerged, for almost 30 years, a catalog of works that stands out for its diversity and originality. In September 1996, he founded the Orchestre philharmonique du Grand Montréal, an amateur ensemble of high caliber which obtained an immediate success, until its dissolution, in June 2001. He then took the reins of Music of Arts and Letters Program, at College of Valleyfield where, from 2000 to 2013, he teached history, theory, analysis, choral singing and music-assisted computer. In 2010, he founded the Orchestre symphonique de la Vallée-du-Haut-Saint-Laurent, an ensemble which plays classical, romantic and post-romantic repertoire on period instruments. The sting of studies and the need to take good care of his many business prompted him to enroll at Ecole des Hautes Etudes Commerciales in Montreal, where he was awarded a Graduate Diploma in cultural organizations, in December 2012 and a Masters in Management of cultural enterprises, in September 2014.