Trainer Profile

Hyein Choi is currently active as a voice coach. She earned her Bachelor’s degree in Classical Vocal Performance from Sookmyung Women’s University, where she participated in numerous performances and graduated with distinction. Following her graduation, she began her professional career as a vocal coach with the Bucheon Youth Choir, where she developed a deep interest in various voice qualities. In 2022, she was introduced to Estill Voice Training® and subsequently completed the Estill Figure Proficiency (EFP) certification. In 2025, she achieved the Estill Master Trainer (EMT) credential. She currently teaches Estill-based voice coaching at Voice-IN Studio, working with a wide range of students. In addition, she serves as a choral instructor at several elementary and middle schools, where she provides training in both vocal technique and ensemble performance.