กับ After Forever

• Ephemeral (demo, 1999)
• Wings of Illusion (demo, 1999)
• Follow in the Cry (single, 2000)
• Prison of Desire (full-length, 2000)
• Decipher (full-length, 2001)
• Emphasis/Who Wants To Live Forever (single, 2002)
• Monolith of Doubt (single, 2002)
• Exordium (EP, 2003)
• My Choice/The Evil That Men Do (single, 2003)
• Invisible Circles (full-length, 2004)
• Digital Deceit (single, 2004)
• Remagine (full-length, 2005)
• Two Sides/Boundaries Are Open (single, 2006)
• Mea Culpa (compilation, 2006)
• Energize Me (single, 2007)
• After Forever (full-length, 2007)
• Equally Destructive (single, 2007)

กับ Ayreon

• Universal Migrator Part 1: The Dream Sequencer (full-length, 2000)
• 01011001 (full-length, 2008)
• Elected (EP, 2008); vocals in "Ride the Comet".

กับ Star One

• Space Metal (full-length, 2002)
• Live On Earth (live album, 2003)