• Michael Wagener
• Producer

• Kit Woolven
• Producer, Engineer

• Roy Z
• Producer

• Orphanage
• Performer

• Hammerfall
• Performer

• Opeth
• Producer

• Markus Staiger
• Compilation

• Waldemar Sorychta
• Producer

• Oscar Holleman
• Producer

• Steven Wilson
• Producer

• Charly Bauerfeind
• Producer

• Lalitha Sankaran
• Engineer

• Timo Tolkki
• Producer

• Kristian Wahlin
• Illustrations

• Stratovarius
• Performer

• Andy Sneap
• Producer

• Primal Fear
• Performer

• Lacuna Coil
• Performer

• Nightwish
• Producer

• Gerard Magin
• Producer

• Mat Sinner
• Producer

• Iced Earth
• Performer

• Nevermore
• Performer

• Paradise Lost
• Performer

• The Gathering
• Producer

• Amorphis
• Performer

• Anathema
• Performer

• Crematory
• Producer

• Helloween
• Performer