My heartfelt thanks go to many people who have supported and helped me with this project.
In particular to my supervisor Charles Toet, for his encouragement and guidance throughout the process. Also to Henk Borgdorff and my colleagues from our Master Circle for their excellent advice and fascinating discussions over the course of the last two years. I have also been the recipient of much help from the following colleagues, instrument builders, musicologists and organologists spread far and wide.
Sebastian Krause (Soloposaunist, MDR Sinfonie Orchester)
Rolf Handrow, retired bass trombonist of the Gewandhaus Orchestra.
Dr. Wieland Hecht, of the Grassi Museum.
Mario Weller, Musikinstrumenten Museum, Markneukirchen
Stefan Voigt, Instrument Builder, Markneukirchen
Dr. Hannes Vereecke, Ludwigsburg
Rainer Egger, Instrument Builder Basel
Ian Bousfield, Bern
Howard Weiner, Freiburg
Stewart Carter, USA
Cas Gevers, München
Martin Mürner, Bern
Günter Hett, Bergisch Gladbach
Markus Leuchter, Instrument Builder, Herzogenrath
And lastly to my dear wife Anna, a great advisor and supporter, who helped keep me going through many doubts, and much procrastination.