Sonja Greiner first became the manager of the International Chamber-Choir Competition and the festival Musica Sacra International in Marktoberdorf (Germany) at the beginning of the 90ies. She later became deputy Secretary General and then Secretary General of the ECA-EC, her current position. As a former Board member of the International and European Music Council and coordinator of numerous international projects, she has a vast experience in the field of networking and cooperation.