Brazil | Events 2017 Palestra sobre saúde vocal para funcionários de empresa call center – Período Matutino 2017-04-30 Brazil, Events 2017
Events 2017 | Germany Ein Blick in den “mystischen Abgrund” – Stimmphysiologie sichtbar gemacht 2017-01-282024-02-02
Events 2017 | New Zealand Voice, body and soul – World Voice Day with the CeleBRation Choir (Auckland) 2017-03-31
