Genre: Metal Progressif
Origines: Long Island, New York, USA
Thèmes récurrents: Philosophie, émotions, addictions, fantasy, folie, religion, politique
Actif de 1985 à 1988 (sous le nom Majesty) et depuis 1988


Membres:

John Petrucci: guitare,choeurs

John Myung: basse

 Mike Portnoy: batterie, chant

James LaBrie: chant

Jordan Rudess: claviers

(de gauche à droite: Jordan Rudess, John Petrucci, James Labrie, Mike Portnoy et John Myung)

Discographie:
When Dream And Day Unite (1989)

Images And Words (1992)

Live at the Marquee (live - 1993)

Awake (1994)

A Change Of Seasons (EP - 1995)

Falling Into Infinity (1997)

Once in a LIVEtime (live - 1998)

Metropolis Pt.2: Scenes From A Memory (1999)

Live Scenes From New York (live - 2001)

Six Degrees Of Inner Turbulence (2002)

Los Angeles, California 5/18/98 (live - 2003)

Train Of Thought (2003)

Graspop Festival 2002 (live - 2003)

Master of Puppets (live - 2004)

Tokyo, Japan 10/28/95 (live - 2004)

Live at Budokan (live - 2004)

The Number of the Beast (live - 2005)

When Dream And Day Unite (live - 2005)

Octavarium (2005)

Old Bridge, New Jersey 12/14/96 (live - 2006)

Dark Side of the Moon (live - 2006)

Score (live - 2006)

Systematic Chaos (2007)

Made in Japan (live - 2007)

New York City 3/4/93 (live - 2007)

Forsaken EP (EP - 2008)

Black Clouds & Silver Linings (2009)

Uncovered 2003 - 2005 (live - 2009)

Progressive Nation 2008 (live - 2009)

Wither (EP - 2009)

A Dramatic Turn of Events (2011)

Dream Theater (2013)

Live at Luna Park (live - 2013)

Happy Holidays (live - 2013)

Illumination Theory (EP - 2014)

Breaking the Fourth Wall (Live from the Boston Opera House) (live - 2014)

The Astonishing (2016)

Distance over Time (2019)

Distant Memories - Live in London (live - 2020)

Lost Not Forgotten Archives: Images and Words - Live in Japan, 2017 (live - 2021)

A Dramatic Tour of Events – Select Board Mixes (live - 2021)

A View from the Top of the World (2021)

Lost Not Forgotten Archives: When Dream and Day Reunite (Live) (live - 2021)

Lost Not Forgotten Archives: Live in NYC 1993 (live - 2022)

...And Beyond - Live In Japan, 2017 (live - 2022)

Lost Not Forgotten Archives: Live in Berlin (2019) (live - 2022)

Lost Not Forgotten Archives: Live at Madison Square Garden (2010) (live - 2023)

Parasomnia (2025)

 http://www.dreamtheater.net/