- Prof. Udo Dahmen
- Claus Heßler
- Wolfgang Haffner
- Jojo Mayer
- Marco Minnemann
- Jost Nickel
- Joachim Sponsel
- Ralf Gustke
- Johnny Rabb
- Michael Küttner
- David Garibaldi
- Andy Gillmann
- Benny Greb
- Phil Maturano
- Dom Famularo
- Steve Smith
- Simon Phillips
- ...
- Beatrice Egli
- AFSHIN (Popstar aus Iran)
- Bobby Kimball
- Kate Russell (US Country Star)
- Guildo Horn & die Orthopädischen Strümpfe
- Gregor Meyle (Sing mein Song)
- David Hanselmann (Backing Vocals bei Pur & The Voice of Germany)
- Wallis Bird & European Band (Sziget Festival Budapest/Ungarn)
- Rolf Stahlhofen (Söhne Mannheims)
- Claus Eisenmann (Söhne Mannheims)
- Beatrice Egli
- Ella Endlich
- Tom Gaebel
- Thomas Anders
- Tina Turner
- Chris de Burgh
- u. v. m.
