2: 
THORA & Friends
- Sylver Myst & Thora (NL,2007)
- Denis, "the god of sound"
- Diter Roumen (Sylver Myst) & Irek (NL, 2007)
- Thomas, Irek & Liv Kristine (Leaves Eyes) 2006
- Janusz & Liv Kristine (Leaves Eyes) 2006
- Irek & Chris Pohl (Blutengel) 2006
- Benjamin (Beyond the Void) & Janusz (2006)
- Irek, Dominik & Rudolf (Beyond the Void) 2006
Thora & Darzamat (2005)
. . .
- Irek & Biff Byford (Saxon) W.O.A. 2004
- Thomas & Warrel Dane (Nevermore) W.O.A. 2004
- Irek & ...?
