About me
Heidi serves as Head of Voice at tonebase, where she leads the platform’s vocal education initiatives and works with singers around the world.
She is the founder of Sound and Song Retreats, a series of immersive programs that combine sacred music, vocal training, and contemplative practice.
As a performer, she is the founding soprano of the award-winning vocal quartet Seraphour and has appeared with major ensembles including the New York Philharmonic, Philadelphia Orchestra, and Los Angeles Baroque Orchestra.
Heidi has held voice faculty positions at the University of Southern California, Pepperdine University, and California Lutheran University. She holds a Bachelor of Music from Westminster Choir College and a Master of Music from the University of Southern California.
Heidi Vass helps singers build sustainable technique, embodied confidence, and expressive freedom through research-informed training and deeply human teaching.
She is a soprano, educator, and arts leader whose work bridges performance, voice science, and contemplative musical practice. With more than two decades of experience on stage, in universities, and in private studios, Heidi has guided singers at every level—from beginners to professionals—toward healthier, freer, more expressive voices.
Her teaching integrates modern vocal science, traditional bel canto principles, and holistic approaches to breath, alignment, and artistic intention. At the center of her philosophy is a simple idea: the voice is not just an instrument, but an extension of the whole person.
What Drives Her Work
Heidi’s teaching is guided by three core principles: evidence-based vocal technique, deep human connection, and the integration of artistry and spirituality.
Whether in a private lesson, an online course, or a retreat, her goal is the same: to help singers develop healthy technique and a more meaningful connection to their voice and their music.
“There is no greater joy in life than helping another person find their voice”
what my singers say…
“Working with Heidi completely changed how I see myself as a singer. I gained confidence, trust in my voice, and a belief in my own talent that I carry with me everywhere.”
— Alexis“Heidi helped me discover my voice and my potential. Her guidance pushed me to work harder, trust myself, and pursue what I love with confidence.”
— Ana “Working with Heidi helped me build real confidence in my voice and my performances. I’m incredibly grateful for the guidance and care that shaped my journey.”
— Cecilia