Antoine Livio

International Music Critic. France Musique

Dr. Elmar Weingarten

Direktor Berlin Philharmoniker

Gakushukai

Artist Agency Japan

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.

Sir Andreas Schiff

International Soloist