Stefan is a certified Estill Master Trainer who has studied and worked with some of the most experienced voice experts in the world, including Anne-Marie Speed, Paul Farrington and Charlotte Xerri as well as legendary top performers such as Birgit Nilsson and Tom Krause and directors Hal Prince and Sir Peter Hall.
 
With over 20 years of experience as a professional singer, voice coach and musical director, Stefan has mentored a broad range of singers worldwide and helped guide them to their goals.
 
Through mentoring sessions, singers, singing teachers and choral directors are offered ongoing professional development, personalised advice and tailored tutorials on any subject related to vocal pedagogy and its application to individual singers or groups.