Effective period / Period of releases: 1964 - 1982

Members: Heinrich Huber, Wieland Kuijken, Michel Piguet, Sarah Cunningham, Kenneth Gilbert, Jordi Savall, Walter Stiftner, Adelheid Glatt, Nils Ferber, Eugen M. Dombois, Michel Chapuis, Gabriel Garrido, Bettina Bänziger, Anthony Bailes, Renate Hildebrand, Anne Van Royen, Richard Erig, Dieter Dyk, Martha Gmunder, Käthe Wagner, Charlotte Joss, Martin Derungs, Hansjürg Lange, Françoise Stein, Christopher Schmidt, Bernhard Billeter, Anne Gallet