breath support (by 1 person)

breathing (by 1 person)

cape town (by 1 person)

dissertation (by 1 person)

dresden (by 1 person)

germany (by 1 person)

hamburg (by 1 person)

ike moriz (by 1 person)

music (by 1 person)

music studies (by 1 person)

rotterdam (by 1 person)

singing (by 1 person)

singing teacher (by 1 person)

south africa (by 1 person)

teaching (by 1 person)

the netherlands (by 1 person)

thesis (by 1 person)

vocal coach (by 1 person)

voice (by 1 person)