While being an apprentice with the Santa Fe Opera in 2007, Mr. Thériault received the Campbell Wachter Memorial Award from the company. Apart from obtaining a Master of Music degree from the San Francisco Conservatory of music, with the precious support of the Baxter & Alma Ricards scholarship, he also trained at the Canadian Vocal Art Institute, and at Nice International Summer Academy. Amongst his realizations, he sang the role of Gnyphos in the world premiere of Young Caesar, an opera by Lou Harrison, was soloist for the north American premiere of Telemann`s oratorio Jauchzet Jubilier und Singe, and received a Quebec Opus Award for his participation in the BachToTango concert with Quartango ensemble.
Most recently, he sang Alfred (Die Fledermaus), Bobinet (La vie parisienne),and Malcolm (Macbeth) with Opéra de Québec, as well as Alfredo (Traviata), Canio (Pagliacci) and Radamès with Montreal-based company Opéra Immédiat. Since the start of his career, he was invited by many Canadian and international ensembles, such as: Santa Fe Opera, Orchestre de la Garde Républicaine de Paris, Ensemble Parallèle, Lanaudière Festival, Domaine Forget, Canada Musical Youth, Lamèque International Baroque Festival, Orford Festival, Orchestre Symphonique du Saguenay-Lac-St-Jean, Orchestre symphonique de Trois-Rivières, Opera New Brunswick, and Symphony New-Brunswick.