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Mary Johnston




Scroll to learn more about Ms. Letellier's private voice studio

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Teaching Philosophy

I believe everyone can sing. My job is to help singers find a healthy vocal technique to last a lifetime and explore every genre that sparks joy in their hearts, be it classical, musical theater, jazz, folk, or contemporary commercial music. 

Soprano Mary Johnston Letellier (she/her/hers) works with students of all ages and levels to develop cohesive, healthy, and beautiful voices. Ms. Letellier is passionate about creating an inclusive learning environment for students of all backgrounds, gender identities, and physical abilities. She strives to empower all students to become well-rounded musicians across classical, musical theater, contemporary commercial music, and jazz styles.


Ms. Letellier studies at the New England Conservatory for her Doctorate of Musical Arts in Vocal Performance. She received her Master’s and Bachelor’s degrees in Opera Performance from the Boston Conservatory at Berklee. She is currently a member of the voice faculty at University of Southern Maine Osher School of Music, 317 Main Community Music Center, as well as the Co-Founding Artistic Director of The Complete Voice, a summer workshop for aspiring professionals and motivated amateurs in both classical and musical theater performance. In 2013, Ms. Letellier founded her private vocal studio, MJL Voice Studio, which she has since grown to 60+ students. Her students have consistently placed highly at NATS and have garnered several other awards. Many have gone on to study at The Boston Conservatory at Berklee,  Lawrence Conservatory of Music, Taylor University, Tanglewood, Schmidt Vocal Intensive, and The Boston Conservatory at Berklee Musical Theater Intensives. 


Ms. Letellier’s varied pedagogical interests have led her to develop coursework in vocal pedagogy, diction for singers, opera history, voice for instrumentalists, dramatic coaching, technology for singers, basic music theory, and accessibility in voice. She presented her “Listen Up” workshop, focused on teaching students with developmental disabilities, at 317 Main Community Music Center. Committed to her own professional development. Ms. Letellier has taken the Trans Voices Masterclass with Dr. Stephanie Weiss at Opera Programs Berlin, multiple trans-affirming voice masterclasses with Liz Jackson-Hearns from the Voice Lab, the Vocal Pedagogy Professional Workshop at the Boston Conservatory at Berklee, the Acoustic Vocal Pedagogy Workshop at the New England Conservatory, Alexander Technique for the Audition Brain at The Empowered Musician, and many others.


She serves as President of the Maine chapter of NATS and has been an invited adjudicator at NATS New England (2021) and NATS Maine (2018). She is Founder and Co-Manager of the Maine chapter of Opera on Tap: Maine, and she remains an active member of the Society of Pi Kappa Lambda, the American Honor Society for Music.

Student Testimonials

Use the arrows to scroll and read testimonials from some of Ms. Letellier's students. 

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Blog  & Social Media

Click the button to the right to be guided to Ms. Letellier's new blog

Follow along with Ms. Letellier's voice studio on social media at the links to the right 

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To view Ms. Letellier's performance schedule, enjoy audio and video excerpts, and read her performing biography, please click the button below

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