Antoine Livio †

International Music Critic. France Musique

Dr. Elmar Weingarten

Direktor Berlin Philharmoniker

Gakushukai

Artist Agency Japan

Heinrich Schiff †

International Soloist

Julian Kovatchev

Zagreb Philharmonic Orchestra

Martha Argerich

International Soloist

Peter Lukas Graf †

International Soloist

Pierre Colombo †

World Federation of Competitions Geneva

Prof. Ph. D. Alexander Bonduryansky

Tschaikwosky Conservatory

 

Prof. Rudolf Buchmann

Künstlersekretariat Wien

Rose-Marie Schnittler

Daniel Barenboim Agency. Paris.