Heron

Geoffrey Hannant (organ)

Hilary Norris

Hans-Christoph Becker-Foss (organ), Martin Schnellenberg (organ), Ernst Riedlinger (organ), Hans-Dieter Weber (organ), Frank Berger (trumpet), Werner Simons (organ), Francis Jackson (organ), Ullrich Böhme (organ), Martin Baker (organ), Andrew Lumsden (organ), Kevin Bowyer (organ), James O'Donnell...

Ronald Frost (organ)

Marc Schaefer (soloist), Bernhard Edskes (soloist), Egon Schwarb (soloist), Oskar Birchmeier (soloist), Jean-Claude Zehnder (soloist)

John Longhurst (organ)