Yannick Lemaire studied choir conducting in Paris with Claire Marchand and Musicology at the University François Rabelais in Tours. He was taught choral singing at CNR Cergy-Pontoise, ENM d'Argenteuil, CNR Lille and neighborhood music schools, and ENM Cambrai.
He also worked in the service of the Diocese of Cambrai for the training and accompaniment of choirs, and was director of the Maîtrise-Cathédrale. He is artistic director of Harmonia Sacra and the festival Embar(o)quement immédiat ! in Valenciennes since their creation.
Yannick Lemaire is a member of the steering committee of the project Hainaut, terre musicale (17th-18th centuries).