Mario Guarneri has been doing master classes about the Berp since the ITG convention in Ann Arbor Michigan in 1987. In the U.S. he has presented his approach about efficient sound production on a brass instrument at the Midwest Band and Orchestra Clinic, Texas Bandmaster’s convention, Texas Music Educator Association and numerous other state conventions. He has delivered his message to students and teachers in Japan, Spain, Belgium, Holland, Italy, France and Germany. The Berp is recognized all over the world as the one of the most efficient brass teaching tools ever created. He just finished a 5-day class at Jazz Camp West, and will be travelling to Italy in April of 2015.