Maestro Riccardo Muti is the Music Director of the Chicago Symphony Orchestra.

Maestro Bernard Haitink, is the Conductor Emeritus of the Boston Symphony Orchestra, and Honorary Conductor at the Royal Concertgebouw Orchestra.

Maestro Yannick Nézet-Séguin is the Music Director of the Philadelphia Orchestra and the Metropolitan Opera of New York.

Maestro Roger Norrington is a pioneer in the historical performance practice movement.

Maestro Daniele Gatti is the music director of the Teatro dell'Opera di Roma.

Maestro Neeme Jarvi is the former Music Director of Detroit Symphony Orchestra.

Mr. Alexander Steinberger is the vice president of the Vienna Philharmonic Orchestra.

Mr. Bendix-Balgley is the concertmaster of the Berlin Philharmonic Orchestra.

Kristinn Sigmundsson is an international renowned bass.

Mark Delavan is an American operatic bass-baritone.

Maestro Fabio Mechetti is the principal conductor of Orquestra Filarmônica de Minas Gerais, Brazil

Maestro Nadler is a conducting staff at the Metropolitan Opera of New York.

Maestro Nicolás Pasquet is the Professor of Conducting at the Hochschule für Musik "Franz Liszt" Weimar, Germany.