Jelaskan Diskografi dari John Petrucci

When Dream and Day Unite (1989)

Metropolis Pt. 2: Scenes from a Memory (1999)

Six Degrees of Inner Turbulence (2002)

Black Clouds & Silver Linings (2009)

A Dramatic Turn of Events (2011)

A View from The Top of The World (2021)

Liquid Tension Experiment 2 (1999)

When the Keyboard Breaks: Live in Chicago (2009)

Liquid Tension Experiment 3 (2021)

G3: Live in Tokyo (2005)

An Evening with John Petrucci and Jordan Rudess (2000)

Explorers Club - Age of Impact (1998)

Jon Finn Group - Wicked (1998)

Jordan Rudess - Feeding the Wheel (2001)

Derek Sherinian - Blood of the Snake (bermain dalam trek "Czar Of Steel") (2006)

Marty Friedman - Loudspeaker (Gitaris Spesial dalam "Black Orchid") (2006)

Periphery - Periphery II: This Time It's Personal (Gitar solo dalam trek "Erised") (2012)

Working Man - Various Artists (A tribute to Rush) (1996)

Dragon Attack - Various Artists (A tribute to Queen) (1997)

Guitar Battle - Various Artists (1998)