| Year | Artist | Album/Single | Role |
| 1989 | Heavens Gate | In Control | musician |
| 1990 | Heavens Gate | Open the Gate and Watch (EP) | musician |
| 1991 | Heavens Gate | Livin' in Hysteria | co-producer, musician |
| 1992 | Heavens Gate | More Hysteria (EP) | co-producer, musician |
| 1992 | Heavens Gate | Hell for Sale! | co-producer, musician |
| 1992 | Viper | Evolution | backing vocals |
| 1992 | Viper | Vipera Sapiens (EP) | backing vocals |
| 1993 | Heavens Gate | Live for Sale! | musician |
| 1993 | Angra | Angels Cry | producer with Charlie Bauerfeind, engineer, musician |
| 1993 | Gamma Ray | Insanity and Genius | engineer, musician |
| 1994 | Running Wild | Black Hand Inn | engineer, programming |
| 1995 | Gamma Ray | Land of the Free | musician |
| 1996 | Heavens Gate | Planet E. | producer with Miro, engineer, mixing, musician |
| 1996 | Angra | Holy Land | producer with Charlie Bauerfeind, engineer |
| 1996 | Angra | Freedom Call (EP) | producer with Charlie Bauerfeind, engineer |
| 1997 | Rhapsody | Legendary Tales | producer with Miro, engineer, mixing, musician |
| 1998 | Angra | Fireworks | keyboards and computer programming |
| 1998 | Rhapsody | Symphony of Enchanted Lands | producer with Miro, engineer, mixing, mastering, musician |
| 1999 | Kamelot | The Fourth Legacy | producer with Miro, engineer, mixing, mastering, musician |
| 1999 | Luca Turilli | King of the Nordic Twilight | producer with Miro, engineer, mixing, mastering, musician |
| 1999 | Heavens Gate | In the Mood (EP) | producer with Miro, engineer, mixing, mastering, musician |
| 1999 | Heavens Gate | Menergy | producer with Miro, engineer, mixing, mastering, musician |
| 1999 | Mob Rules | Savage Land | mixing, mastering |
| 2000 | Kamelot | The Expedition | producer, engineer, mixing, mastering |
| 2000 | Rhapsody | Dawn of Victory | producer with Miro, engineer, mixing, mastering |
| 2000 | Rhapsody | "Holy Thunderforce" (CD5") | producer with Miro, engineer, mixing, mastering |
| 2000 | Mob Rules | Temple of Two Suns | mixing, mastering, musician |
| 2000 | Avalon | Eurasia | producer, engineer, mixing, mastering |
| 2000 | Brainstorm | Ambiguity | mixing, mastering |
| 2001 | Kamelot | Karma | producer with Miro, engineer, mixing, mastering, musician |
| 2001 | Rhapsody | Rain of a Thousand Flames | producer with Miro, engineer, mixing, mastering |
| 2001 | Ambeon | Fate of a Dreamer | mastering |
| 2001 | Gun Barrel | Power Dive | mastering |
| 2001 | Virgo | Virgo | producer, engineer, mixing, mastering, musician |
| 2001 | Gigantor | Back to the Rockets!!! | engineer, mixing, mastering, musician |
| 2001 | Various Artists | Tribute to Helloween: Keeper of Jericho | musician |
| 2002 | Rhapsody | Power of the Dragonflame | producer with Miro, engineer, mixing, mastering, musician |
| 2002 | Luca Turilli | Prophet of the Last Eclipse | producer with Miro, engineer, mixing, mastering, musician |
| 2002 | Luca Turilli | Demonheart (EP) | producer with Miro, engineer, mixing, mastering, musician |
| 2002 | Shaman | Ritual | producer, engineer, mixing, musician |
| 2002 | At Vance | Only Human | mixing |
| 2002 | Avantasia | The Metal Opera Part II | engineer |
| 2003 | Kamelot | Epica | producer with Miro, engineer, mixing, mastering, musician |
| 2003 | Epica | The Phantom Agony | producer, engineer, mixing |
| 2003 | Aina | Days of Rising Doom | producer, engineer, mixing, songwriter, musician |
| 2003 | After Forever | Exordium (EP) | mixing |
| 2003 | Edguy | Burning Down the Opera | engineer |
| 2003 | Taraxacum | Rainmaker | mixing, mastering |
| 2003 | Galloglass | Legends from Now and Nevermore | mastering |
| 2003 | Invictus | Black Heart | mastering |
| 2004 | Gigantor | Giant Robot Spare Parts Vol. 1 | co-producer, engineer |
| 2004 | Rhapsody | The Dark Secret (EP) | co-producer, engineer, mixing |
| 2004 | Rhapsody | Symphony of Enchanted Lands II: The Dark Secret | co-producer, engineer, mixing |
| 2004 | Lunatica | Fables & Dreams | producer, mixing, mastering |
| 2004 | After Forever | Invisible Circles | vocal producer with Miro, mixing |
| 2004 | Edguy | King of Fools (EP) | engineer |
| 2004 | Edguy | Hellfire Club | engineer |
| 2004 | Shaman | RituAlive | musician |
| 2004 | Heavenly | Dust to Dust | mixing, mastering |
| 2004 | Dol Ammad | Star Tales | drums producer and engineer |
| 2004 | Asrai | Touch in the Dark | engineer, mixing |
| 2005 | Epica | We Will Take You with Us | audio mixing |
| 2005 | Epica | Consign to Oblivion | producer with Olaf Reitmeier, engineer, mixing, musician |
| 2005 | Shaman | Reason | producer, engineer, mixing, mastering |
| 2005 | Kamelot | The Black Halo | producer with Miro, engineer, mixing, mastering |
| 2005 | Felony | First Works | engineer, mixing, mastering |
| 2005 | Epica | The Score – An Epic Journey | co-producer, engineer, mixing |
| 2005 | Rhapsody | "The Magic of the Wizard's Dream" (CD5") | co-producer, engineer, mixing |
| 2005 | After Forever | Remagine | vocal producer, engineer, mixing |
| 2005 | Edguy | Superheroes (EP) | producer, engineer, mixing, mastering |
| 2005 | Hartmann | Out in the Cold | producer with Oliver Hartmann, engineer, mixing, mastering |
| 2006 | Edguy | Rocket Ride | producer, engineer, mixing, mastering |
| 2006 | Lunatica | The Edge of Infinity | producer, engineer, mixing, mastering, composer |
| 2006 | Luca Turilli | The Infinite Wonders of Creation | co-producer, engineer, mixing, mastering, musician |
| 2006 | Luca Turilli's Dreamquest | Lost Horizons | co-producer, engineer, mixing, mastering, musician |
| 2006 | Rhapsody | Live in Canada 2005: The Dark Secret | producer, engineer, mixing |
| 2006 | Redkey | Rage of Fire | producer with Thomas Rettke, engineer, mixing, mastering, musician |
| 2006 | Kamelot | One Cold Winter's Night | mixing, mastering, musician |
| 2006 | Rhapsody of Fire | Triumph or Agony | co-producer, engineer, mixing, mastering |
| 2007 | Hartmann | Home | producer with Oliver Hartmann, engineer, mixing, mastering |
| 2007 | Kamelot | Ghost Opera | producer with Miro, engineer, mixing, mastering, musician |
| 2007 | Epica | The Divine Conspiracy | producer, engineer, mixing, mastering, vocal arrangements, backing vocals |
| 2007 | Andre Matos | Time to Be Free | producer with Roy Z, mixing |
| 2007 | Rhapsody of Fire | Visions from the Enchanted Lands (DVD) | producer, engineer, mixing |
| 2007 | Asrai | Pearls in the Dirt | producer, mixing, mastering, backing vocals |
| 2007 | Avantasia | Lost in Space Part I (EP) | producer with Tobias Sammet, engineer, mixing, mastering, musician |
| 2007 | Avantasia | Lost in Space Part II (EP) | producer with Tobias Sammet, engineer, mixing, mastering, musician |
| 2008 | Brainstorm | Downburst | producer with Miro, engineer, mixing |
| 2008 | Avantasia | The Scarecrow | producer with Tobias Sammet, engineer, mixing, mastering, musician |
| 2008 | Edguy | Tinnitus Sanctus | producer, engineer, mixing, mastering |
| 2008 | Symphonity | Voice from the Silence | mixing |
| 2008 | Hartmann | Handmade - Live in Concert | mastering |
| 2008 | Amanda Somerville | Windows | producer, engineer, mixing and mastering with Miro, musician |
| 2009 | Epica | The Classical Conspiracy | producer, mixing, mastering |
| 2009 | Brainstorm | Memorial Roots | co-producer with Miro, engineer, mixing |
| 2009 | Epica | Design Your Universe | producer, engineer, mixing, vocal lines author, backing vocals |
| 2009 | Andre Matos | Mentalize | producer, engineer, mixing, backing vocals |
| 2009 | Tribe | Pray for Calm... Need the Chaos | producer, engineer, mixing, mastering, arrangements |
| 2009 | Lunatica | New Shores | producer, engineer, mixing, mastering, arrangements, songwriter |
| 2009 | Edguy | Fucking with F***: Live | mixing, mastering |
| 2009 | Hartmann | 3 | producer with Oliver Hartmann, engineer, mixing |
| 2009 | Infinity Overture | Kingdom of Utopia | producer with Miro and Niels Vejlyt, mixing, mastering |
| 2010 | Avantasia | The Wicked Symphony | producer with Tobias Sammet, engineer, mixing, mastering, musician |
| 2010 | Avantasia | Angel of Babylon | producer with Tobias Sammet, engineer, mixing, songwriter, musician |
| 2010 | Kamelot | Poetry for the Poisoned | producer with Miro, engineer, mixing, mastering, musician |
| 2010 | Rhapsody of Fire | The Cold Embrace of Fear – A Dark Romantic Symphony (EP) | engineer, mixing, musician |
| 2010 | Rhapsody of Fire | The Frozen Tears of Angels | engineer, mixing, musician |
| 2010 | Catharsis | Светлый Альбомъ | producer, engineer, mixing |
| 2010 | Diabulus in Musica | Secrets | mastering |
| 2011 | Avantasia | The Flying Opera | co-producer, sound engineer, mixing, musician |
| 2011 | Edguy | Age of the Joker | producer, engineer, mixing, musician |
| 2011 | Rhapsody of Fire | From Chaos to Eternity | engineer, mixing |
| 2011 | MaYaN | Quarterpast | producer, engineer, mixing, mastering |
| 2011 | Beyond the Bridge | The Old Man and the Spirit | mastering |
| 2011 | Infinity Overture | The Infinite Overture Part 1 | mixing, mastering |
| 2011 | Trillium | Alloy | musician, producer, engineer, mixing |
| 2012 | Epica | Requiem for the Indifferent | producer, engineer, mixing, vocal lines author |
| 2012 | Kamelot | Silverthorn | producer with Miro, engineer, mixing, mastering, musician |
| 2013 | Avantasia | The Mystery of Time | musician, producer, engineer, mastering |
| 2013 | Sascha Paeth | Hard on the Wind | musician, producer, engineer, mastering |
| 2014 | Edguy | Space Police: Defenders of the Crown | producer, engineer, mixing, mastering |
| 2015 | Kamelot | Haven | producer, engineer |
| 2016 | Avantasia | Ghostlights | musician, producer, engineer, mixer |
