Armenia
Croatia
Ukraine
Germany
Sweden
South Korea
China
Greece
Serbia
Canada
United States
Manhattan School of Music, New York
Lithuania
Latvia
Belgium
Austria
University of Music and Performing Arts, Vienna
Australia
Australian National University, Canberra
Ireland
Royal Conservatoire of Scotland
United Kingdom
Lithuanian Academy Of Music And Theatre, Vilnius
Estonia
Poland
Jāzeps Vītols Latvian Academy of Music, Riga
Turkey
Mannheim University of Music and Performing Arts
Moldova
National Opera Studio, London
Kharkiv National University of Arts named after I. P. Kotlyarevsky
Spain
Vasyl Stefanyk Precarpathian National University
Sibelius Academy Opera, Helsinki
Hungary
Lithuania - Austria
Estonian Academy of Music and Theatre, Tallinn
Hacettepe University Ankara State Conservatory
Norway
Royal Danish Academy of Music, Copenhagen