Releases
- When Dream and Day UniteStudio albums · 1989 · Guitar
- Images and WordsStudio albums · 1992 · Guitar
- Images and Words - Live in TokyoConcert films · 1993 · Guitar
- Live at the Marquee / Live in TokyoLive albums · 1993 · Guitar
- AwakeStudio albums · 1994 · Guitar
- International Fan Club Christmas CDFan club releases · 1996 · Guitar
- The Making Of Falling To InfinityFan club releases · 1997 · Guitar
- Falling Into InfinityStudio albums · 1997 · Guitars and Background Vocals
- Once in a LIVEtime / 5 Years in a LIVEtimeLive albums · 1998 · Guitar
- 5 Years in a LIVEtimeConcert films · 1998 · Guitar
- Once in a LIVEtime OuttakesFan club releases · 1998 · Guitar
- Metropolis Pt. 2: Scenes From a MemoryStudio albums · 1999 · Guitar and Vocals
- Cleaning Out the ClosetFan club releases · 1999 · Guitar & Vocals
- Scenes From a World TourFan club releases · 2000 · Guitar
- Metropolis 2000: Scenes From New YorkConcert films · 2001 · Guitar
- Live Scenes From New YorkLive albums · 2001 · Guitar
- 4 Degrees of Radio EditsFan club releases · 2002 · Guitar
- Six Degrees of Inner TurbulenceStudio albums · 2002 · Guitar and Vocals
- Taste the MemoriesFan club releases · 2002 · Guitar
- The ATCO DemosFan club releases · 2003 · Guitar
- Los Angeles, California 5/18/1998Official bootlegs · 2003 · Guitar
- The Majesty Demos 1985-1986Official bootlegs · 2003 · Guitar
- The Making of Scenes From a MemoryOfficial bootlegs · 2003 · Guitar & Vocals
- Train of ThoughtStudio albums · 2003 · Guitar
- Graspop Festival 2002Fan club releases · 2003 · Guitar
- Master of PuppetsOfficial bootlegs · 2004 · Guitar
- Tokyo, Japan 10/28/1995Official bootlegs · 2004 · Guitar
- When Dream And Day Reunite DVDOfficial bootlegs · 2004 · Guitar
- Echo's Hill - Utgave 13 Live In Oslo 2004 Fanclub ArchiveFan club releases · 2004 · Guitar
- When Dream and Day Unite: Demos 1987-1989Official bootlegs · 2004 · Guitar
- Live at BudokanLive albums · 2004 · Guitar
- A Sort of HomecomingFan club releases · 2004 · Guitar
- A Walk Beside the BandFan club releases · 2005 · Guitar
- Dark Side Of The Moon DVDOfficial bootlegs · 2005 · Guitar
- Images and Words: Demos 1989-1991Official bootlegs · 2005 · Guitar
- The Number of the BeastOfficial bootlegs · 2005 · Guitar
- When Dream and Day ReuniteOfficial bootlegs · 2005 · Guitar
- OctavariumStudio albums · 2005 · Guitars and Vocals
- RomavariumFan club releases · 2006 · Guitar
- Dark Side of the MoonOfficial bootlegs · 2006 · Guitar
- Old Bridge, New Jersey 12/14/1996Official bootlegs · 2006 · Guitar
- Score: 20th Anniversary World TourLive albums · 2006 · Guitar
- Images and Words: 15th Anniversary PerformanceFan club releases · 2007 · Guitar
- Made in JapanOfficial bootlegs · 2007 · Guitar
- Systematic ChaosStudio albums · 2007 · Guitars and backing vocals
- Bucharest, Romania 7/4/2002Official bootlegs · 2007 · Guitar
- Falling Into Infinity: Demos 1996-1997Official bootlegs · 2007 · Guitar
- New York City 3/4/1993Official bootlegs · 2007 · Guitar
- Greatest Hit (...and 5 Other Pretty Cool Videos)Concert films · 2008 · Guitar
- Progressive Nation 2008Fan club releases · 2008 · Guitar
- Chaos in Motion 2007-2008Live albums · 2008 · Guitar
- The Making of Falling Into Infinity 1997Official bootlegs · 2009 · Guitar
- Black Clouds & Silver LiningsStudio albums · 2009 · Guitars and backing vocals
- Santiago, Chile 12/6/2005Official bootlegs · 2009 · Guitar
- Train of Thought: Instrumental Demos 2003Official bootlegs · 2009 · Guitar
- Uncovered 2003-2005Official bootlegs · 2009 · Guitar
- A Dramatic Turn of EventsStudio albums · 2011 · Guitars and backing vocals
- Dream TheaterStudio albums · 2013 · Guitars and backing vocals
- Live at Luna ParkConcert films · 2013 · Guitar
- Happy HolidaysFan club releases · 2013 · Guitar
- Breaking the Fourth WallLive albums · 2014 · Guitar
- The AstonishingStudio albums · 2016 · guitar, production, story and concept
- Distance Over TimeStudio albums · 2019 · Guitar; Producer
- Distant Memories - Live in LondonLive albums · 2020 · Guitar
- A Dramatic Tour of Events - Select Board Mixes 2011-2012Official bootlegs · 2021 · Guitar
- Images and Words - Live in Japan 2017Official bootlegs · 2021 · Guitar
- A View From the Top of the WorldStudio albums · 2021 · Guitar; Producer
- ...and Beyond - Live in Japan 2017Official bootlegs · 2022 · Guitar
- Lost Not Forgotten Archives: Live in Berlin 2019Official bootlegs · 2022 · Guitar
- Live at Wacken 2015Official bootlegs · 2022 · Guitar
- Live at Madison Square Garden 2010Official bootlegs · 2023 · Guitar
- Distance Over Time Demos 2018Official bootlegs · 2023 · Guitar
- ParasomniaStudio albums · 2025 · Guitar; Producer
- Quarantième: Live à ParisLive albums · 2025 · Guitar
- Awake DemosOfficial bootlegs · Guitar