Marie Oppert, daughter of musician parents, early starts the learning of the piano and the clarinet, and then during her childhood joins the choir of the College School of Paris (Conservatoire à rayonnement régional de Paris). She appears for the first time on stage in 2008 in the musical "Pinocchio's Journey" ("Le Voyage de Pinocchio") directed by Sandrine Anglade. In 2009, she plays Marta in the musical "The Sound of Music" ("La Mélodie du Bonheur") on the boards of the Théâtre du Châtelet ; for its 2011 repeat, she changes her part for Brigitta. Again in the Châtelet in 2013, she is the violinist of the British production of "Street Scene" from Kurt Weill. The very same year, she performs at the Salle Pleyel as "Mi Bémol" in "Le Clavier Fantastique", the children's opera of Graciane Finzi from Jules Verne. Marie Oppert, au Théâtre du Châtelet
