Marie-France Lefebvre works regularly as a guest assistant conductor and prompter at major opera companies, including The Metropolitan Opera, where she returns since 2007. She was a member of the full time Music Staff of Washington National Opera from 1994-2004. She has worked with Wolf Trap, Santa Fe, HGO, Cincinnati, DMMO, Minnesota, Calgary, and Seattle Opera companies.

Marie-France has worked as a prompter at Washington National Opera, The Metropolitan Opera and at San Francisco Opera, working with singers including Benjamin Bernheim, José Carreras, Plácido Domingo, Lawrence Brownlee, Samuel Ramey, Ferruccio Furlanetto, Renée Fleming, Dame Kiri Te Kanawa, Diana Damrau, Isabel Leonard, Erin Morley, Vittorio Grigolo, Matthew Polenzani, Jamie Barton, Mariusz Kwiecien, and Verónica Villaroel.

She has assisted, among others, Marco Armiliato, Louis Langrée, Nicola Luisotti, Sir Simon Rattle, Emmanuel Villaume, Yannick Nézet-Séguin, Gianandrea Noseda, Carlo Rizzi, James Levine, Roberto Abbado, Heinz Fricke.

Marie-France also welcomes all opportunities to perform song repertoire and cherishes a relationship with Cincinnati Song Initiative (CSI). Among other projects with CSI, Marie-France performed an all-Duparc songs recital in Fall 2019.

Marie-France studied piano with Monique Collet-Samyn, Marek Jablonski, Dale Bartlett, Donal Nold, Artur Balsam, Joseph Seiger, Martin Katz, Arthur Greene, and Soeur Claire Dubois. She holds a DMA in Piano Accompanying from the University of Michigan and an MM in Accompanying from the Manhattan School of Music.

Recent projects have included participating in a Goethe/Wolf Recital with CSI in 2025 with Murrella Parton and Marcus DeLoach, Aida at the Metropolitan Opera with Yannick Nézet-Séguin conducting, working with the Young Artists at Opera Australia in May 2025 and performing a recital with them, and Dialogues des Carmélites at Wolf Trap Opera Summer 2025.

Prior to joining CCM in 2008, where she is a Professor of Opera, Marie-France served on the faculty of the Michigan State University School of Music from 2004-2008 and previously was a guest instructor at the University of Maryland. She worked as a guest French diction coach with The Curtis Institute of Music from 1999-2004.