Brazil | Events 2017 Orientação de Saúde Vocal a comunidade carente de Belém 2017-04-24 Brazil, Events 2017
Events 2017 | Hungary Örökifjú Zenebarátok Kórusának nyilvános próbája/Open rehearsal to Ageless Music Lover’s Choir 2017-03-20
Events 2017 | Russian Federation Questionnaire for students “Voice disorders and its prophylaxis” 2017-04-13