Regina Sgier has been engaged as a lyric soprano in concert and opera, including at the Salzburg Festival, Salzburg Mozart Week and Zurich Festival Weeks. She has taught singing at the Mozarteum University since 1989. In addition to her work as a singing teacher, Regina Sgier has been involved in the development and training of children's and young people's voices for many years. She is a voice coach and co-director of the "Salzburg Festival and Theater Children's Choir".