Marcie Ellen Duplantis is a distinguished vocalist, educator, and conductor. She is a Teaching Artist for The Metropolitan Opera, a member of The Dallas Opera Chorus, member of the American Guild of Musical Artists (AGMA), and summer Instructor at Interlochen Arts Camp of Interlochen Center for the Arts.

Duplantis is recognized for her rich and alluring soprano voice and stage presence within operatic roles, such as the Countess and Marcellina in The Marriage of Figaro, Ellen Orford (Peter Grimes), Miss Jessel (Turn of the Screw), and roles in Puccini operas like Turandot, Madama Butterfly, Suor Angelica, and Gianni Schicchi. Dallas Opera productions include Tosca, Roméo et Juliette, La bohème, and future productions of Dialogues des Carmélites and Don Carlo. 

She holds a Master of Music in Voice Pedagogy from Texas Christian University and holds a post-graduate certification in Vocal Pedagogy from the Boston Conservatory at Berklee, as well as her Bachelor of Music in Vocal Performance and a Master of Arts in Teaching (Choral Music) from Centenary College of Louisiana, graduating cum laude with Departmental Honors. 

In 2024, she made her Lincoln Center debut as a singer and rehearsal conductor of a new choral and orchestral work, "Kindness – A Chorale And Fugue In The Baroque Tradition" by Mark Hayes, at David Geffen Hall in New York City.

She has performed with professional and collegiate ensembles, including The Dallas Opera, Yale University, and the Boston Conservatory, Shreveport Opera, and the Shreveport Symphony. She has made international appearances in Cambridge, UK, and at Salisbury Cathedral. She has served on the voice faculty for Texas Christian University and Louisiana Tech University. 

Her debut EP, "Walls", produced in Nashville, reached #14 on iTunes Christian & Gospel charts. She has worked with a publisher associated with Lauren Daigle and Nashville producer Ryan Corn.

She owns Marcie Ellen Studio, offering private voice instruction and performance coaching in person and online, serving students across 13 U.S. states. Duplantis also coaches contestants on shows like American Idol, The Voice, and America's Got Talent, and worked with a Centricity Records-associated songwriter mentor.

Marcie Ellen Duplantis, M.M., M.A.T., is a distinguished vocalist, educator, and music leader. With strong academic credentials and extensive experience in performance, pedagogy, and faith-based music leadership, she bridges the gap between classical training and contemporary outreach.