ROGER VONTOBEL, Stage director

Born in Zurich in 1977, he studied acting directing at the University of Music and Theater in Hamburg. He directed at the Deutsches Schauspielhaus in Hamburg, Münchner Kammerspiele, Schauspiel Bochum, Deutsche Theater Berlin, Maxim Gorki Theater, Théâtre de la Colline in Paris, Royal Danish Theater in Copenhagen, Staatsschauspiel Dresden and Schauspiel Frankfurt. In 2006, he was voted 'Young Director of the Year' in the critics' survey of 'Theater heute'. In the same year he also received the Kurt Hübner Award for Young Directors.

ROLAND BÖER, Musical direction

was artistic and musical director of the Cantiere Festival until 2020 Internazionale d'Arte di Montepulciano. Until 2019 he was first guest conductor of the Mikhailovsky Theater Saint Petersburg. He made guest appearances at leading international Opera houses such as the Teatro alla Scala, the Royal Opera House London, the Deutsche Oper Berlin, the Royal Opera Houses Stockholm and Copenhagen, the Polish State Opera in Warsaw, the Czech National Theater Prague and the New National Theater Tokyo

Photo: Marco Mazzolai


the Swiss studied at the state colleges in Vienna and Berlin. Scholarship holder at the Accademia Chigiana in Siena. Permanent engagements at the state operas Hannover, Mainz and at the Cologne Opera. Guest performances u.a. At the Grand Théatre Geneve, Deutsche Oper Berlin, Staatsoper Hamburg, Opéra National de Paris, Opéra de Marseille, Teatro Massimo Palermo, Teatro San Carlo, Napoli, Los Angeles Opera, Vancouver Opera with roles such as 'Brangäne' Tristan und Isolde, 'Ortrud' Lohngrin, 'Eboli' Don Carlos, 'Azucena' Trovatore, 'Sexton' Jenufa, 'Kabanicha' Katja Kabanova, 'Marie' Wozzeck

KALLE KANTTILA, Auditon training

was born in Oulu, Finland. He began his music studies at the Helsinki Conservatory of Music and furthered them at the Zürich Conservatory and the Music Department of University Karlsruhe, Germany. Kalle Kanttila is the founder and director of IOA Management. International Opera Artists was established in 2012 and is an agency for opera singers and conductors. It is based in Munich (Germany) & Helsinki (Finland) and provides worldwide services in the field of opera.

VSEVOLOD DVORKIN, Répétiteur/Pianist

was born in 1972 in Moscow (Russia). He was 5 years old when he began to play piano. He attended the Music School for Children (where he has taught afterwards for three years) under the guide of prof. N. A. Petrova and later the Special Music School "Gnessins" of Moscow under the guide of prof. E. V. Tolkunova. He continued his studies at the Conservatory "P. Ciaikovskij" of Moscow where he graduated in 1995 with prof. V. V. Gornostaeva and prof. N. V. Troull.


MATTEO PIROLA, Répétiteur/Pianist

The Italian pianist Matteo Pirola was born in Erba and completed his piano studies at the music conservatory “G. Verdi ”in Como. Exchange semesters took him to the University of Music in Karlsruhe. Master classes with internationally renowned pianists and conductors such as Aldo Ciccolini, Richard Bonynge, Natalia Troull, Vsevolod Dvorkin, Vincenzo Balzani gave him important artistic impulses.


JUSTYNA STROZEK, Répétiteur/Pianistin

Born 1980 in Glogow, Poland, she graduated from High School with distincion in the main subject of Mathematics. She studied at the University of Music Warsaw with Prof. Obidowicz. 2003 – 2012 she was repetiteur at State Opera Warsaw, where she prepared with H.P. Lehmann the „Ring der Nibelungen“ and „Frau ohne Schatten“ and she received a scholarship from Wagner Foundation in Bayreuth.





is an Austrian altist who found her center of life in Zurich. From an early age, she had a desire to become a singer, but first studied mathematics and later decided to study singing. She studied singing with Barbara Böhi and later with Cornelia Kallisch. She is currently supervised by Sandra Trattnigg (Diemasterclass). In addition to her work as a singer and vocal pedagogue, she also takes on other tasks in the artistic environment, so that she will be assistant director for the production 'Crispino e la Comare' by the Free Opera Company.


Media & Public Relations, began her musical career with her education at the Royal Northern College of Music in Manchester, followed by the Biel Opera Studio and the Accademy d'Européen d'Aix-en-Provence. Great Britain, Ireland, France, Austria, Germany, Italy, Finland, Israel and Switzerland were stops on their musical path. She has worked with highly demanding directors and conductors throughout her career, including Peter Brook, Claudio Abbado, Daniel Harding, Patrice Chérau, Pierre Boulez, Cihan Inan, Hendrik Müller, Barbara Rucha, Yoshi Oida, Esa Pekka-Salonen, Frank Hilbrich , Dieter Kaegi, Omri Nitzan and David Stern.