Discography
| Year | Band | Title | Notes |
|---|---|---|---|
| 1984 | Rising Power | Power for the People | out of print |
| 1986 | Inner Sanctum | 12 A.M. | out of print |
| 1986 | S. A. Adams | Unearthed | |
| 1986 | Majesty | Majesty | demos |
| 1989 | Dream Theater | When Dream and Day Unite | |
| 1992 | Dream Theater | Images and Words | |
| 1994 | Dream Theater | Awake | |
| 1995 | Dream Theater | A Change of Seasons | |
| 1997 | Dream Theater | Falling into Infinity | |
| 1998 | Liquid Tension Experiment | Liquid Tension Experiment | |
| 1999 | Liquid Tension Experiment | Liquid Tension Experiment 2 | |
| 1999 | Dream Theater | Metropolis Pt. 2: Scenes from a Memory | |
| 2000 | Transatlantic | SMPT:e | |
| 2001 | Transatlantic | Bridge Across Forever | |
| 2001 | Andy West | Rama 1 | |
| 2002 | Dream Theater | Six Degrees of Inner Turbulence | |
| 2003 | OSI | Office of Strategic Influence | |
| 2003 | Neal Morse | Testimony | |
| 2003 | John Arch | A Twist of Fate | EP |
| 2003 | Dream Theater | Train of Thought | |
| 2004 | Neal Morse | One | |
| 2005 | Dream Theater | Octavarium | |
| 2005 | Neal Morse | ? | |
| 2005 | Yellow Matter Custard | One Night in New York City | tribute to The Beatles (with Paul Gilbert, Neal Morse, and Matt Bissonette) |
| 2006 | OSI | Free | |
| 2006 | Morse, Portnoy and George | Cover to Cover | |
| 2006 | Hammer of the Gods | Two Nights in North America | tribute to Led Zeppelin (with Paul Gilbert, Daniel Gildenlöw, and Dave LaRue) |
| 2006 | Cygnus and the Sea Monsters | One Night in Chicago | tribute to Rush (with Paul Gilbert, Sean Malone, and Jason McMaster) |
| 2007 | Neal Morse | Sola Scriptura | |
| 2007 | Dream Theater | Systematic Chaos | |
| 2007 | Liquid Tension Experiment | Spontaneous Combustion | as Liquid Trio Experiment |
| 2007 | Amazing Journey | One Night in New York City | tribute to The Who (with Paul Gilbert, Billy Sheehan, and Gary Cherone) |
| 2008 | Neal Morse | Lifeline | |
| 2009 | Transatlantic | The Whirlwind | |
| 2009 | Dream Theater | Black Clouds & Silver Linings | |
| 2010 | Avenged Sevenfold | Nightmare | |
| 2010 | Avenged Sevenfold | Welcome to the Family | EP |
| 2011 | Adrenaline Mob | Adrenaline Mob | EP |
| 2011 | Neal Morse | Testimony 2 | |
| 2011 | Yellow Matter Custard | One More Night in New York City | tribute to The Beatles (with Paul Gilbert, Neal Morse, and Kasim Sulton) |
| 2012 | Adrenaline Mob | Omertà | |
| 2012 | Flying Colors | Flying Colors | |
| 2012 | Morse, Portnoy and George | Cover 2 Cover | |
| 2012 | Neal Morse | Momentum |
Read more about this topic: Mike Portnoy