Gaudreau has worked with opera companies throughout the United States. He has sung and understudied a variety of leading and comprimario roles including Sid in Benjamin Britten’s Albert Herring (Stony Brook Opera), Fiorello and Figaro in Rossini’s The Barber of Seville  (Opera on the James), Aeneas in Henry Purcell’s Dido and Aeneas (Central City Opera), Billy Bigelow in Rodgers and Hammerstein’s Carousel (Central City Opera), Yamadori in Puccini’s Madama Butterfly (Shreveport Opera), Masetto and Don Giovanni in Mozart’s Don Giovanni, Alvaro in Daniel Catàn’s Florencia en el Amazonas, and Hannah before in the Florida premiere of Laura Kaminsky and Mark Campbell’s As One (Pensacola Opera).

Gaudreau was a Bonfils-Stanton Studio Artist and Apprentice Artist for two seasons with Central City Opera, and Artist-in-Residence with both Pensacola Opera and Opera on the James. A versatile singer with flexibility in various styles, he excels not only in opera, art song, and oratorio, but new music, jazz and musical theatre as well. He recently sang a program of the Great American Songbook at the Isabella Stewart Gardner Museum in Boston. He performs prolifically as a song recitalist and continues to be invited as a guest artist for NEC engagements. He sang Ligeti’s Aventures and Nouvelles Aventures, and Schumann’s Spanische Liebeslieder in two installments of the First Monday Concert Series at Jordan Hall and recorded Pavel Haas’ Four Songs on Chinese Poetry for an NEC Liederabend. In a repeat performance of Ligeti at Boston Symphony Hall, Corey was hailed by Boston Music Intelligencer as a baritone with “vitality and precision,” offering “a fascinating study of shifting sonorities and sonic possibilities.”

Corey is a staff singer at Trinity Church in the City of Boston. Formerly, he sang at Calvary-St. George’s Parish in New York. Upcoming engagements include Massenet’s Le Portrait de Mignon, singing the role of Des Grieux, as a guest artist with Stony Brook Opera, and a concert tour of London with the Trinity Choirs in Summer 2025.