Armin Klopfer

16.07.00 / Dillingen

Doug Pinnick

01.06.00 / Bielefeld

Jimmy Haslip

19.07.00/München

Michael Schmidt

06.10.00 / Schleswig

Jeyper Man

05.09.00 / Herford

Stig Petersen

09.10.00 / Osnabrück

Guido Berendes

24.03.01 / Bad Salzuflen

Roger Sadowsky (luthier)

22.05.01 / Manhattan / New York

Carl Thompson (luthier)

19.05.01 / Brooklyn/ New York

Dan Jackson

19.05.01 / Manhattan / New York

Jack Frisch

22.05.01 / Manhattan / New York

Bent Seather

12.10.01 / Bielefeld / Germany

Dirk Wiese

Oct. 12th, 2001 / Detmold / Germany

Marleaux Basses (luthier)

July, 23rd, 2002 / Claustal-Zellerfeld /

Germany

Eric Axelson

Oct. 31, 2001 / Bielefeld / Germany

Paul Di Leo

Oct. 10th, 2002 / Herford / Germany

Colin Hodgkinson

May. 8th, 2003 / Bielefeld / Germany

Dominik Merz

Nov. 10th, 2002 / Marktbreit / Bavaria

Michael Klahn

May 31, 2004 / Bielefeld / Germany

Marco Mazotti

29.05.2003 / Visp / Switzerland

Reto Bauert

May 28th, 2003 / Pfäffikon / Switzerland

Jürgen Steffen

Sept, 18, 2004 / Bielefeld / Germany

Frans Vollink / Udo Pannekeet

April 17th, 2006 / Hellendoorn / Netherlands

Jean-Pierre Fortin

January, 28th, 2006 / Bielefeld / Germany

Wolfgang Schwalbe (luthier)

April 19th,2009 / Herford / Germany

Nick Douglas (Doro Pesch)

May 08th 2009, Osnabrück / Germany

Ralf Börjes (luthier)

May 23rd 2009, Bad Zwischenahn / Germany

Jimmy Haslip

May 24th 2009 / Herford / Germany

Karl Green

01.Mai 2010, London

Andrew Gibbons

01.Mai 2010, London