Mary Vaillancourt
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Mary Vaillancourt

Mary V.

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This teacher successfully passed a thorough criminal background check with SterlingBackcheck. This badge verifies trusted teacher status.
Teaching Locations:
Profile-location-online Online
Teaching Locations:
Profile-location-online Online
Levels taught:
Beginner, Intermediate, Advanced

Please note:

I'm interested in experienced/dedicated students ages 14 and up (this includes adults). Advanced/serious singers welcome, experienced teenagers & adults welcome to write me and see if we are a good fit. My studio mainly consists of advanced, professional singers as well as college students pursuing Music Degrees and high school students preparing for school whom are very active in their music/choral/band/orchestra/theater programs.

If this sounds right for you, read below:

About Me as a Teacher:

I’m a dramatic soprano living in Germany, currently pursuing my Master’s Degree at the Hochschule Franz Lizst in Weimar. I have done a lot of work on my technique through the years - having a voice type that is by definition high maintenance, I have a lot of insight into technique as the training for this type of voice is extensive by necessity. It was a long road - I was first considered a mezzo, then a soprano, then I worked internationally as a dramatic coloratura, after which I developed towards a spinto in my thirties before my voice finally settled. All this development has been made possible by my having worked with stellar pedagogues, and the journey has itself given me a large perspective about technical issues. I speak Italian, Russian and German.

I believe that the best hope for any young singer to improve technique is through diversified repertoire (Musical Theater, Pop, Classical, etc;). I have students singing and competing in many genres but one thing my students have in common is the discipline to work in this diversified manner. Many of my students have been with me for 3 or even 4 years and see the benefits that classical has given their musical theater, particularly with flexibility.

My approach is to assign repertoire that confronts technical issues, not avoids them. I think this is a massive mistake with voice teachers these days. No high notes? Sing something lower. No flexibility? Sing something simple. No range? Let's pick a song with less notes. This is NOT how I work and it is important that anyone interested in lessons with me understands this. My students enjoy the benefits of improved technique outside of lessons. In lessons we work hard.

Lesson Format

30m lesson:
Warm-Ups (15m)
Pieces/Songs (15m)

45m lesson:
Warm-Ups (15m)
Classical Piece (15m)
Musical Theater Piece (15m)

60m lesson:
Warm-Ups (25m)
Classical Piece (15-20m)
Musical Theater Piece (15-20m)

Beginners: One 30m session per week
Enthusiastic Beginner: Two 30m sessions per week
Intermediate Student: One 45m session per week
Advanced/Experienced Beginners: One 45m session per week
Intermediate-Advanced: One 60m session per week

Clarification about level (please read to assess yourself)

Beginner: No experience, interested in trying out
Enthusiastic Beginner: No experience, motivated
Intermediate Student and/or Advanced Experienced Beginner Students: Students who have either already taken lessons, or students heavily involved in their Choir/Musical Theater/Band/Orchestra etc; therefore have experience in Musical settings
Intermediate-Advanced: Experienced with lessons & technical work, looking to move forward.

Who I am not good for:

Students who are not ready to confront their technical shortcomings.

Students who want to sing in voice lessons for fun, not for improvement.
(By the way, improving can be fun-but it does confront issues.)

People who are not willing to have a flexible approach to repertoire for technical growth.

People who are not ready to be confronted with direct feedback.

About Mary V.

Miss Vaillancourt is the rare combination of professional singer and certified Music Educator. She has worked in International Schools all over the world and is now a freelance soloist singing on concert and operatic stages in Europe. Recent engagements include Sofia National Opera (Small Stage) & Stara Zagora Opera (Main Stage). Miss Vaillancourt is currently a student at the Hochschule für Musik Franz Liszt in Weimar, Germany.

Mary Vaillancourt is a dramatic soprano originally from Portland, Maine. Her voice has been defined as having richness and flexibility. Prior to COVID 19, Miss Vaillancourt had most recently been seen as Nedda in I Pagliacci with Opera Veto in Varna in Winter 2019. Other recent engagements include the National Opera of Sofia in Bulgaria where she sang in the Chamber Opera "Katze Ivanka” in the title role. In the 2018/2019 season made her highly anticipated soloist debut in State Opera of Stara Zagora as Nedda in I Pagliacci. She also covered Adina in “L’Elisir D’amore” with Ruse State Opera in the 2018-2019 Season. During the 2017-2018 season, Miss Vaillancourt performed as a choir member on the main stage in several major operas including La Boheme, La Traviata, Tosca, Aida as well as various other staged productions and choral concerts. Other notable performances include Beethovens 9th Symphony with the Sofia Philharmonic Orchestra and Lucia di Lammermoor in Sofia's National Theatre. Miss Vaillancourt was invited with enthusiasm to sing in several faculty concerts hosted by Moscow Conservatory in the beautiful Rachmaninoff Hall.

Highlights from her time in Moscow include performing an evening of Russian Art songs in the Chekhov Museum and the Kremlin State Geological Museum. Miss Vaillancourt pursued her Master’s Degree at the prestigious Gneisin Academy in Moscow whilst studying with Bolshoi Opera soloist Irina Dolzhenko. During this time, she also studied intensive Russian through a full immersion program in the Conservatory. During her time in Europe, she performed as a soloist in three productions at the Mediterranean Opera Festival in Italy including Cosi Fan Tutte (Fioridiligi), Suor Angelica (Suor Angelica), Gianni Schicchi (Nella) and La Boheme (Musetta, Cover).

Though currently a very active performer, Miss Vaillancourt has been and continues to be a passionate and enthusiastic teacher. She entered the University of Southern Maine as a violinist and graduated as a singer with a degree in Music Education. Miss Vaillancourt has spent her career being an excellent educator to both Primary and Secondary students in International Schools around the world including in Abu Dhabi, Bahrain, Russia, Netherlands, Czech Republic, and Spain.

Miss Vaillancourt designed and established curriculum-based instrumental programs in schools in the Middle East and Russia for students 6-14 years of age. She has also been noted as an excellent vocal pedagogue with young students, getting high-quality singing out of large groups of singers of all abilities. She knows how to create an enthusiastic, vibrant classroom that helps students learn but more importantly helps students leave feeling empowered. As a conductor, she has been invited to conduct several major festivals in the International School circuit, most notably the COBIS International Music Festival Orchestra and the BSF Gifted and Talented Festival Choir and String Orchestra. During her time in the Middle East, Miss Vaillancourt prepared multiple students for the prestigious ABRSM, LAMDA and Trinity practical and theory exams. All passed these exams but impressively enough, the majority received distinctions and merits.


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69 Reviews
Profile-location-online Online

I have put my daughter in singing classes with many different teachers but none were as spectacular as Mary. She is in love with these classes and all the technique being taught in them, and I've noticed a lot of progress in her singing plus confidence in her ability. I sadly cannot afford any more classes but recommend Mary whole-heartedly to anyone that really wants to advance as a singer and have serious improvement.

Posted Jun 30, 2021
Michelle W.
Profile-location-online Online

Mary is an excellent violin teacher. She has a firm yet kind approach with an effective method in teaching a challenging instrument. She is punctual, reliable and passionate about teaching. In short, we had a wonderful experience and highly recommend Mary!

Posted May 16, 2021
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I am a soon to be Music Education College major and Mary has helped me tremendously through that process. I have gotten into al the schools I’ve applied to and u don’t think I could have done that without her!💕

Posted Feb 20, 2021
Paula Charlize E.
Profile-location-online Online

I am a second year college student majoring in Choral Music Education and Mary is the best voice coach I have ever had. I knew from the first lesson we had that I'd be able to learn so much from her! She has helped me discover what pieces work best for my voice type and we have done Italian pieces like V'adoro pupille, Vedrai carino, and Non disperar chi sa. We've also worked on English pieces like At Saint Patrick's Purgatory and French pieces like Apres un reve and L'heure exquise. She has helped me improve my breath support, intonation, and my overall technique in the time I've taken her lessons- almost a year. I highly recommend her as a voice teacher for anyone serious or wanting to be serious about singing.

Posted Feb 7, 2021
Malkah W.
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Mary is personable, thorough and excellent in her talent. Can't wait for the next lesson!

Posted Jan 10, 2021
Cherie Blackwell
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Mary is very focused thorough instructor.

Posted Dec 6, 2020
Justice Deluca
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Mary was super helpful. She's good at letting you know in a friendly way what you need to work on. Within reason, lets you learn on your own terms. She understands that music needs to be fun.

Posted Nov 19, 2020
Elizabeth F.
Profile-location-online Online

Mary has been teaching my son Thomas for a few months now. He had been doing in-person group lessons at school before the Covid lockdown. The improvement we have seen in his playing since beginning lessons with Mary is amazing. We are all enjoying watching his progress. Additionally Mary is very responsive to communications and flexible in respect of lesson changes.

Posted Nov 18, 2020
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My son is taking lessons with Miss Mary since the lockdown. He is really enjoying each lesson and it has been such a blessing. Miss Mary is used to the technical difficulties involved with an online class and quickly gets around them. She is also good at helping correct students such as a bad bow hold even in online format. Deepti N, California.

Posted Nov 7, 2020
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I have taken over 10 violin lessons with Mary by now. I highly recommend her as a teacher. When I started as an adult beginner, picking up violin after a 3-year absence of practice, I was rusty in a lot of fundamentals. Mary was quick to notice detailed issues in my posture and techniques, which I would not have noticed if I were to practice on my own. Her specific suggestions targeting each problem and being mindful during practice are extremely helpful. After two or three lessons, I feel the sound quality has surely improved. Overall, Mary has been very patient and yet persistent in helping me improve my skills.

Posted Nov 5, 2020
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My son joined the orchestra in middle school to play violin, he just learnt piano but no experience on violin before, and since there are many players, the teacher couldn't pay too much attention to each of them. My son asked me find a private teach to help him correct his mistake and improve skills, so I found Mary on this website. I didn't expect too much from the online violin lesson initially, just thought to have my son take couple of lessons so that he could meet the requirements of orchestra. However Mary is such a good teacher, patient and experienced, that my son learn more in couple of month than a whole year in school orchestra, and also gain more interest in playing violin. So we continue the lesson after first 5 classes.
Hopefully this could help other parents who want their kids to learn violin seriously, I believe Mary is a qualified teacher to bring your kid to next level on violin.

Posted Nov 4, 2020
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Mary has been one of the biggest singing blessings in my life. Before I started singing with Mary, I had major issues with cracking, I also had issues with my chest voice being way too heavy and my head voice being non-existent. I couldn't sing above a "C" and all my notes sounded screamy, or you couldn't hear them at all. Mary taught me how to effectively use my mix voice, and find my sound! She worked with me on first of all, how I approach the note, using many different strategies to get me to keep my chords tight. Like thinking of a laser going all the way to the back of the throat and making sure I used the proper support. She completely committed her time to me, even giving me lessons for free to make sure I continued practicing getting my mix stronger. She taught me how to direct my sound inwards instead of thinking outwards and screaming like I used to do. She helped me get out of my own head about my natural classic sound, and feel confident about my unique voice. I can now sing way above a "C" in a healthy way, now clearer and more beautiful than ever. Now when I go back to singing a pop song, or a theatre piece, I can sing it with no problems. I still am working with her after 2 years of lessons. Now we are working on getting my sound to be louder, and getting me to think less like an American, and get my vowels more refined. Thanks to Mary, I finally feel confident in my voice, and am so excited to keep working and improving!

Posted Nov 2, 2020
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If you are an advanced student and want to further improve your operatic singing, then Mary is definitely an excellent teacher for the following main reasons:
1) Experienced - she is a talented singer herself who knows what to do to fix the problems.
2) Repertoire selection - she recommended many arias that were challenging, but super beneficial for developing my singing techniques.
3) Clear instruction - Mary recognises when you making good progress and we have a very constructive result during the lessons.
There are many more that can be listed... I just want to say that I feel lucky to study with Mary and highly recommend her to other singers who wish to develop his/her singing to the next level.

Posted Oct 15, 2020
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We had a nice discussion about singing and set a goal to start practice. Looking forward to the next lesson.

Posted Sep 15, 2020
Lynn Woodard
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Mary is an extremely talented vocalist and a very gifted teacher. I came in with no training whatsoever and was comfortable with her immediately. She is constantly challenging me to stretch beyond my comfort zone, which has made a huge difference in my vocal range and my confidence. She is very knowledgable about the mechanics of singing and searches for just the right analogies for my untrained brain to get my "singing parts" into the correct position to the produce the best sound. She is also patient and encouraging. She really is amazing and I couldn't be happier with my lessons and progress. Highly recommend Mary!

Posted Sep 11, 2020
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As an inexperienced singer, Mary is helping me find my voice, and so far, I love it! She is very clear and concise when it comes to teaching, and there is a level of expectation when it comes to practicing, which I love, as it holds me accountable for my progress.

Posted Jul 24, 2020
Connie *.
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Very good introduction. Looking forward to next week.

Posted Jul 19, 2020
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I am a college student going into my first year as a music major and Mary has been extremely helpful! I started voice lessons coming from a choral background and Mary was able to help me better understand the qualities of my voice and helped me make my technique more consistent. She has also recommended many great arias and pieces for me to work on to expand my repertoire. Overall, I feel much more prepared for college and confident as a vocalist due to these lessons!

Posted Jul 14, 2020
Daniel M.
Profile-location-online Online

Mary is a fantastic teacher for advanced students! She has a scholarly approach to pedagogy informed by her years of training, international performance experience, and encyclopedic knowledge of music and musicians. I already had 25 years of experience singing classical music before starting lessons with Mary, and she is helping me polish my technique and introducing me to new and challenging material. If you’re trying to find a great teacher for advanced vocal music, you should take lessons with Mary.

Posted Jul 11, 2020
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Mary was exactly the kind of teacher I was looking for. I’m an advanced mezzo soprano with a strong voice. Mary was able to give me some very precise exercises and instruction to open my voice even more and fine tune my pitch. Other teachers have given me more generic instruction, but I felt that Mary gave me more direct feedback and exercises for my voice. If you’re serious about your voice, Mary is a great teacher.

Posted Jul 10, 2020
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My name is Ella, I am a 14 year old girl going into high school and I have a passion for singing. Mary Vaillancourt is my voice teacher and she helped so much with my singing! She has taught me so much in our lessons, since I started taking them I have found that I can sing so much higher and clearer. I have also learned how to sing louder. Mary helped me discover the true potential in my voice through classical and broadway songs. I am so grateful to have such an amazing voice teacher and I definitely recommend her to others!

Posted Jul 7, 2020
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Mary is a fantastic teacher. My 2 daughters eagerly look forward to their violin and ukulele classes every week. She is great at engaging them and they have made so much progress with her.

Posted Jul 6, 2020
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I am an adult and have wanted to learn how to play the violin for many years, since I am able to work from home- I decided to invest in online lessons, Mary provides very specific and helpful feedback, she is encouraging, she has helped me to understand the basics to build a strong foundation, I practice between 2-3 times weekly (30 minutes at a time), the difficulty level has progressed along with my skills, she is able to demonstrate techniques, Mary has helped me to fine tune my own abilities, I am left handed so use of the bow has been more tricky for me- she was able to guide me through this difficulty and explained how I should be practicing in order to improve my skill level, I am enjoying learning a new instrument and look forward to advancing my proficiency with the violin, I enjoy the lessons- helps me to think differently- I have always enjoyed having music in my life

Posted Jul 5, 2020
Whitney K.
Profile-location-online Online

Mary is an very great teacher. She always makes sure you understand what she is saying or asking to do. She goes above and beyond to make you not doubt yourself. Would recommend her to anyone.

Posted Jun 30, 2020
Rodley J.
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Very happy that I book with Mary. At the beginning I doubtful and wanted to give up but I’m glad that I didn’t. Mary is patient and very understanding. Mary gave me that push that I needed to continue on my journey.This is an experience I will never forget. Thank You so much so believing in me

Posted Jun 29, 2020
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Mary is a really wonderful teacher! I’m an adult beginner, and I can feel my voice developing a lot already after our first month. She is kind and patient and cares about my goals. I would highly recommend her!

Posted Jun 14, 2020
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Mary is a great teacher. She has a wonderful understanding of all music and is very patient with her students. She tried to bring fun things into her lessons for her students. She is a very talented person and we have enjoyed having her as a teacher. I would highly recommend her for any lesson as she loves what she does and is very affordable and amazing at her craft.

Posted Jun 11, 2020
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Mary is great! Very patient with a nervous and fumbling beginner. She teaches concepts in a way that is very easy for me to understand. Able to give very direct and specific feedback in the moment.

Posted Jun 5, 2020
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As an adult with lots of piano experience but limited violin experience, Mary was able from the very first lesson to quickly determine my skill level and tailor instruction appropriately. I am looking forward to more lessons and am confident that under her guidance and with diligent practice, I will steadily improve.

Posted May 29, 2020
Katie J.
Profile-location-online Online

Within only the first few lessons, I have already learned so much! Mary exceeded any expectations I had. She is incredibly knowledgeable, and has wonderful material suggestions.

Posted May 16, 2020
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I just had my first lesson and it was amazing and helpful.

Posted May 5, 2020
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This is my first year of violin lessons on-line and ever. Mrs. Mary has been great fun, patient and encouraging. I look forward to continuing!

Posted Apr 28, 2020
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I'm a professional opera singer, and sang with Mary last autumn. She's a remarkable performer of extraordinary capacity and talent. Our cast of international professional soloists were all amazed - large voices with such accomplished technique are hard to come by nowadays! She even gave me small pointers that made a huge difference immediately - looking forward to more of those, and to singing together in Estonia!

Highly recommended!

Posted Apr 27, 2020
Neha A.
Profile-location-online Online

I've thoroughly enjoyed my singing lessions with Mary. She has helped me understand my voice better and all thanks to her, I am able to sing beyond what I knew I was capable of. Mary is very knowledgeable and has a good approach to teaching. She chooses just the right songs to teach the vocal techniques and is great at explaining the important concepts in a simple way. Mary is fun to work with and I highly recommend her!

Posted Apr 26, 2020
Profile-location-studio Teacher's Studio

It was good, She correct my sing, I sing better love peace harmony song. once I finish I will post on YouTube to share. people can learn. I also try to learn another Italy song from Mary. thank

Posted Feb 26, 2020
Jinhua G.
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Its a good start. Today we learned chest and head voice. Looking forward to master and singing a few beautiful song with because voice voice.

Posted Feb 8, 2020
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I have had a wonderful time training with Mary over the past couple of weeks. She's been very patient with me during our lessons, and she is very helpful with information in and out of the lessons.
I was hesitant to take some lessons at first because I hadn't sung for a while. There was a point when I was in a choir group in school, I was passionate enough to compete against other schools. But after I graduated, I wasn't able to find time to further practice my singing skills. Signing up to take lessons with her has restored my voice a lot, as well as teach me new things to make my voice more clear. I've had a wonderful time learning from Mary and hope to take more lessons with her in the future. For anyone looking for a professional, serious chance to train your voice for the better, Mary would be your best option.

Posted Feb 1, 2020
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Mary is great!! I sang in high school and college but had gotten out of practice and it pained me to hear myself sing. I have loved working with Mary! Every time we meet something clicks back into place and I hear a big difference. She chooses great music (Adina) and thinks through the warm ups and techniques specifically for my voice. She is honest and gives great feedback. She is constantly learning and is clearly devoted to improvement in herself and her students.
I highly recommend her to anyone interested in classical voice.

Posted Jan 28, 2020
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Mary is working with me on audition material for classical and musical theatre pieces. I had no classical experience and she has helped me get ready for several auditions in a short period of time. Mary directed me toward pieces that showcase my best vocal skills. Really built up my confidence level. Highly recommend for audition prep coaching!

Posted Jan 20, 2020
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Very happy with my first lesson.

Posted Jan 19, 2020
Kristofer Santiago
Profile-location-online Online

My name is Kristofer Santiago I am 13 I am also a student of Mrs. Mary and Mrs. Mary and I have classes and so far my voice has been in the changing state, and Mrs. Mary really helped me improve how my voice and my sound was approached and how to basically organize my voice.
Mrs. Mary is so helpful and very kind sweet and no matter what at the end of every lesson my voice becomes stronger and I feel bolder to sing out loud. Mrs. Mary is The BEST instructor EVER.

Posted Dec 16, 2019
Profile-location-studio Teacher's Studio

I have known Mary as a friend and musician for 18 years. She is a passionate, hardworking, and intuitive musician; these qualities translate into her teaching abilities. Mary engages with people in an unforgettable way, and knows how to explain concepts from many different angles. Mary is experienced in many musical styles, and is an active performer as well as a teacher! It’s always a joy to sing with her :)

Posted Dec 16, 2019
Profile-location-online Online

Mary is a really great teacher and is very helpful if you want to pursue singing as a possible career path, as she teaches you techniques to help improve your voice rather than just teaching songs.

When I started taking lessons I couldn't match pitch that well and was kinda self-conscious about my voice. Now, I can match pitches a lot better, is more confident, and gotten bigger parts in shows.

Posted Dec 15, 2019

I took voice lessons a few years ago but did not feel like I was making the improvements I wanted. I felt like I had reached my voice ceiling limits and very much discouraged by my inability to wrangle aspects of my singing. But despite that, I still wanted to see if I could improve, even just a little.

So I sought out Mary for her emphasis on technique. After a few sessions with her, I am beginning to see improvement and progress that felt elusive to me. She completely blew my misconceptions out of the water and reassured me that I have potential and even more room to grow in my singing (voice ceiling shattered).

If you are serious about improving your singing and committed to putting in the time, Mary is the teacher for you. Not only is she a phenomenal professional singer, but she is also also a fantastic teacher. She draws from experience and but also knows how to clearly communicate her extensive knowledge of technique and how the voice works. Mary is very patient, encouraging, and knows how to provide constructive feedback to help you get to your goals and beyond.

Posted Dec 14, 2019
Silvia Soria
Profile-location-online Online

My daughter takes singing lessons with Mary. She loves her. She improved a lot.

Mary is a great teacher.

Posted Dec 11, 2019
Profile-location-studio Teacher's Studio

Mary is an excellent teacher and has helped me progress considerably as a singer, enhancing my technique in preparation for shows and concerts I performed in. She helped me better understand my own voice and vocal range, helping me discover that I was a natural baritone, rather than a tenor. She is highly skilled, enthusiastic, and always came well prepared for lessons ready to tackle new challenges - I would highly recommend her as a teacher!

Posted Oct 29, 2019
Profile-location-online Online

I first met Mary some 6 years ago as a teenager in high school. I didn't have a strong background in music, but over the years of working with her she has very much helped me get over a lot of the struggles I've had. The number one thing being that she helped me understand that I was not actually a baritone as my school had always labeled me, but a tenor. I had trouble even hitting a Tenor E4 when I first started and now I can extend up to D5 fairly consistently. She's not only fun to work with, but has a great ear for what's going wrong and how to fix it. She's helped me with a lot of my auditions and I owe a lot of my personal success to how hard she's pushed me and how she's given me the confidence to do music that I never thought I could do. She is one of the best teachers you will ever find. I've worked with several voice instructors but none of them ever felt as impactful. Highly recommend Mary to everyone looking to improve their singing.

Posted Oct 22, 2019
Sophia S.
Profile-location-online Online

I have really enjoyed the lessons I have with Mary and I have been able to really improve with her help. She has helped me with my confidence, she is very patient with me, she keeps my goals in mind with her lessons, she keeps in mind the type of voice that I have, and she helps me truly understand what I'm learning. I could not ask for a better teacher.

Posted Oct 22, 2019
Profile-location-studio Teacher's Studio

Mary was my first singing teacher and honestly, I could not have asked for anyone better. She taught me everything from the blindingly obvious basics of vocal technique to the more subtle nuances of history and context behind pieces. She also taught vocal technique in a very intuitive way, so that you always knew where the sound came from and how every slight change in posture or mouth shape affected the quality and character of sound.

Her singing lessons have been truly invaluable to me and are the reason I still actively sing today. Thanks to her that I was also able to get a singing scholarship at my uni.

Posted Aug 28, 2019
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Mary made my dream come true by preparing me for the title role in one of the world's favourite family musicals, the beloved "Jesus Christ Superstar!". Mary's incredible insight into the music and her natural ability to make people feel at ease meant I was rocking out those high notes in no time!

Posted Aug 28, 2019
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I’ve made incredible progress since starting lessons with Mary! I feel more confident and know that Mary can guide me well because of her on-stage experience!

Thank you and looking forward to continuing the lessons!

Posted Aug 28, 2019
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Mary is very patient and knowledgeable in how the voice works. I've been working with her for a few months ( I'm a beginner) and she has been very patient and helpful. I've seen lots of improvement working with her.

Posted Aug 27, 2019
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Very friendly and very helpful! It’s always fun and motivating working with Mary and I’ve already improved after only a few months of working with her!

Posted Jul 28, 2019
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I have only been working with mary for about 3 months. But I have seen great improvements in my singing techniques. She provides great warmup that work on all aspects of the voice to ensure that the voice is developed in all registers. She is a wonderfully encouraging and enthusiastic teacher while also being extensively knowledgeable about technique. She is serious about improving skills but also makes the lessons comfortable and fun. I really like the convience of scheduling lessons and doing lessons online. She is also very good with german and french diction.

Posted Jul 11, 2019
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Mary is a great voice teacher with great skills. She makes you rethink the whole process of singing, with out-of-the-box techniques! Highly recommend her!

Posted Jul 11, 2019
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Mary made me feel very comfortable singing and helped me figure where I needed to improve and how to go about it. Highly recommend.

Posted Jul 11, 2019
Profile-location-studio Teacher's Studio

Mary Vallaincourt was a personal mentor to me during my student-teaching internship in Bahrain in completion of my studies in Music Education at the University of Southern Maine, USA.

Not only did she guide me through my first classroom teaching experiences, she also taught me valuable lessons in both vocal and non-vocal performance. I worked closely with her for six months and was able to witness her professionalism first-hand. She’s a wonderful teacher and a wonderful artist. If you have the opportunity to work with her, don’t miss it.

Miss you, Mary :)


Brad Longfellow
Music Teacher, Piano Player, Singer
Nashville, TN, USA

Posted May 8, 2019
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Mary has consistently delivered sound vocal advice for my students that I've referred to her. I highly recommend her for her vast knowledge and ability to explain complex concepts in an accessible way for optimal learning. A fine teacher. 5 stars!

Posted Mar 27, 2019
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Mary's teaching is well paced and mild - mannered. She helped me push my vocal talent further. She coached me through a local production of Wicked, which went very well. Thanks Mary :)

Posted Mar 27, 2019
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Mary is diligent in her line of work and has most certainly helped me a lot in many ways such as with my vocal training. She was very kind and considerate throughout our lessons and has done her utmost to help me reach my fullest potential!

Posted Mar 27, 2019
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Mme Vaillancourt is a wonderful teacher. She is attentive, patient and creative. Her breathing exercises and vocalises helped me reach a better vocal performance and I am very grateful for it.

Posted Mar 27, 2019
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Mary really knows her stuff. Excellent teacher. She doesn’t waste time; rather she fill the lesson with helpful exercises and explanations that are tailored to your voice and being out your best sound. Highly recommended.

Posted Mar 12, 2019
Jean Pierre
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Mary was highly instrumental to developing my Ear training skills. Through different excercises I find I am more sensitive to pitch and recognising intervals and chords etc.

She was very patient and had relevant feedback to the problems I was having, and achieved very quick results

Posted Jan 27, 2019
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Mary is an amazing teacher. First of all, she is well versed on technique and well trained. Second of all she is an inspiration -- both extremely talented and hard working. Third, she is entirely devoted to her students: tuned in, respectful, a good listener, responsive, encouraging, providing wonderful diagnostics and bringing the right expertise and training to raise students to new levels. She is a whirlwind of talent, hard work, experience and devotion.

Posted Jan 26, 2019
Kathy R
Profile-location-online Online

Mary started teaching my daughters when she was in Maine after a friend recommended her. When she returned to Bulgaria, they started online lessons, which have been convenient and successful. Mary has gone above and beyond, offering online warm ups before auditions and additional support during solos. Mary has been instrumental in helping them step outside their comfort zone, in our aging them to audition whenever possible to get more experience. She balances the wants of my teenager to sing more pop music with the enthusiasm to encourage them to also try more challenging music. I highly recommend Mary if your child is serious about improving their musicality.

Posted Jan 25, 2019

Mary is a very thoughtful, caring person and teacher.

Posted Jan 24, 2019
Profile-location-online Online

My daughter takes voice lessons from Mary and has improved very much with both her voice and her confidence. Mary is dedicated to her students, offering extra support when an audition or big performance is coming up. We have been very grateful for this!

Posted Jan 24, 2019
Kathryn R.
Profile-location-online Online

My daughters started taking lessons with Mary when she was home in Maine. I was sceptical of online lessons when she returned to Bulgaria and returned to her opera, but I was happily surprised. Mary helped both of my daughters markedly improve. The time difference makes some scheduling challenging, but Mary works very hard to accommodate. Not only has she been wonderful about working with my busy girls schedules, she has gone above and beyond, setting up times to warm the girls up for auditions on site via FaceTime I can’t recommend Mary highly enough. She is relatable to my teenagers, challenges them, encourages them, and has helped marked improve my daughters performance.

Posted Jan 24, 2019
Profile-location-online Online

I have been taking vocal lessons with Mary for about a year and a half and have made great progress vocally. She is always very constant and communicates well. At first I was nervous to take lessons via face time/ Skype, but it works very well. From preparing for auditions to working on classical or modern music she always helps to improve my sound and how I present myself. I would highly recommend her if you are looking to improve your voice.

Posted Jan 24, 2019

Photos & Videos

15 Photos & Videos


Nedda - I Pagliacci
Aug 2019 - Present

Opera Veto

Woglinde - Das Rheingold
Jul 2019 - Aug 2019

DMV Berlin

Woglinde in Das Rheingold

Soprano Soloist
Nov 2018 - May 2019

Sofia National Opera

Recital - Soloist Katze Ivanka - Chamber Opera in Bulgarian Magic Flute for Children - Queen of the Night

Cover Soloist - L'Elisir D'amore
Sep 2018 - Oct 2018

Rousse State Opera

Blondchen - The Abduction of Seraglio Adina - L'Elisir D'Amore

Soprano Soloist
Oct 2017 - Oct 2018

State Opera Stara Zagora Opera

Choir in dozens of productions Vesselina Kasarova Masterclass, Soloist Vesselina Kasarova Masterclass Gala Concert, Soloist Nedda - I Pagliacci

Soprano Soloist
Jul 2015 - Aug 2017

Mediterranean Opera Studio

This is training program but very rigorous with many fantastic teachers. I sang several solo performances during this time both on stage and in masterclasses.

Primary Music Teacher
Aug 2014 - Jul 2017

International School of Moscow

-Designed an original, compulsory curriculum for KS2 and KS3 students which included weekly lessons on orchestral instruments Managed and successfully created a strong team of individual music teachers who have been enthusiastically received by students, parents and teachers Developed various instrumental and choral ensembles in both Upper Primary and Secondary which maintained high attendance, enthusiasm and quality Tutored students in sight-singing, ear training, music history, and music theory for ABRSM exams Organized several events including studio recitals, productions and concerts outside of compulsory curriculum which had high parent and student attendance Organized and hosted the International British Schools Foundation Gifted & Talented Festival in Moscow which was attended by 500+ students and faculty members from all over the world Was personally invited (2016 & 2017) to conduct the International COBIS International Music Festival Symphonic Orchestra Students received awards in International COBIS International Music Festival for Brass, String, Woodwind solo and ensemble categories

Voice/Violin/Theory Teacher
Feb 2013 - Aug 2014

British School of Bahrain

Assistant Music and Stage direct West Side Story Stage manage school production of West Side Story Teach private voice, violin, guitar and piano lessons Tutor students in sight-singing, ear training, music history, and music theory for ABRSM exams Teach different choral and instrumental classes ranging from 5-16 age students


Opera Singing
Oct 2020 - Present

Hochschule für Musik Franz Liszt

Master's Degree in Opera Studies (on-going)
Sep 2016 - Dec 2018

Gneissin Academy - Moscow

Bachelor's Degree in Music Education
Sep 2005 - Jan 2011

University of Southern Maine



Limited Proficiency


Professional Proficiency


Professional Proficiency


Music K-12
Dec 2011

Maine Department of Education

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