Praised for the depth of her timbre, the evenness of her voice, her breath control, and the emotion of her singing (Le Devoir), Rose Naggar-Tremblay began her musical training in piano and choral singing before taking up classical voice at the age of 12. She continued her studies at McGill University, where she earned a bachelor’s degree in vocal performance with a minor in European literature and culture. Since 2020, she has studied under Lena Hellström-Färnlöf (director of the Academy of Music and Opera at Mälardalen University).

During her time as a resident artist with the Atelier lyrique de l’Opéra de Montréal from 2017 to 2020, Rose Naggar-Tremblay was heard in productions including Svadba and Twenty-Seven. In 2021, she made an acclaimed debut at the Sofia Opera in the role of Carmen, going on to win First Prize at the Montreal Symphony Orchestra Competition, First Prize at the Concours Georges Enesco in Paris, the Young Canadian Opera Hope scholarship, and the Prize for the Best Interpretation of a Canadian Work at the OSM competition with the song cycle Healing, which she composed in collaboration with Éric Champagne. In 2022, she was named Radio-Canada Classical Music Revelation for 2022–2023, won Second Prize at the Prix d’Europe 2022, and was awarded the prestigious Fernand Lindsay career grant. In 2024, she won Third Prize at the Sembrich International Competition and the audience prize at the Premiere Opera Foundation, both in New York.

An accomplished musician, she frequently lends her voice to chamber music, taking part in numerous concerts and recitals under renowned conductors, including Yannick Nézet-Séguin, Rafael Payare, Jean-Marie Zeitouni, Laurence Equilbey, Christophe Rousset, and Jacques Lacombe, as well as rising stars such as Simon Rivard, Francis Choinière, and Nicolas Ellis. She has recently performed as a soloist in Elgar’s Sea Pictures, the Magnificat settings of CPE Bach and Palmeri, Handel’s Messiah, Vivaldi’s Dixit Dominus, the Requiems of Mozart, Verdi, and Duruflé, and numerous Bach cantatas.

In 2023–2024, she made her debut at the Opéra de Metz and the Opéra de Reims as the Second Spirit (Rusalka), as well as at the Bayerische Staatsoper as the Innkeeper (Boris Godunov); she performed the Voice from Above (Die Frau ohne Schatten) at the Capitole de Toulouse and Erda (Das Rheingold) at the Theater Erfurt, in addition to reprising the role of Carmen at Edmonton Opera. She also produced her first mini-album of original songs — at the crossroads of French chanson and chamber music — titled Je me souviens à toi, which has allowed her to tour with her solo show, including an appearance at the Festival en chanson de Petite-Vallée and the chance to share the stage with legends of Quebec song in concerts with Robert Charlebois and Paul Piché.

In 2025, she returns to the Capitole de Toulouse in the role of Cesare in Giulio Cesare and makes her debut at La Scala in Milan as well as at the Théâtre des Champs-Élysées, performing Farnace in a concert version of Mozart’s Mitridate with Les Talens Lyriques. She joins the agency Concerts Parisiens and the Arion label, with whom she recorded a first album devoted to Handel, released in November 2025. She ends the year recording the role of Clitemnestra in Porpora’s Ifigenia in Aulide with Les Talens Lyriques and Christophe Rousset.