Progressive Metal band formed in Long Island, New York, USA in 1985. They are said to be one of the innovators of the Prog-Metal genre. The band is composed of five prodigious classicaly-trained musicians - James LaBrie (Vocals), John Petrucci (Guitars), Jordan Rudess (Keyboards), John Myung (Bass Guitar) and Mike Portnoy (Drums and Percussion). Their music was initially inspired by the band Rush and influences by bands like Queensryce and Queen can be heard too.
Awake
Metropolis Pt. 2: Scenes from a Memory
Six Degrees of Inner Turbulence
by Camilo October 20, 2004
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the progressive band whose technical proficiency on their instruments cannot be topped by any other rock group
Most people cannot comprehend how incredible the music of Dream Theater is compared to average popular rock crap.
by Tarheel82 September 04, 2004
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A kick ass progressive metal band from NY. They constantly get tons of shit from stupid preps (see: sluts and teenybopper) who listen to crappy pop music such as Nsync and Backstreet Boys and tons of other pop shit. Preps and jocks have no claim to call good music shit because the music they listen to is shit.
prep: hey dream theater sux nsync rulz man

jock: YO BITCH DREAM THEATER SUX GANGSTA RAP RULZ YO

Me: The music you listen to is shit.
by Blahb May 06, 2005
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Dream Theater is a progressive rock band whose career has spanned for nearly three decades. The band are known for their excessively long track durations (with the track "Six Degrees of Inner Turbulence" lasting 42 minutes) as well as incredibly complex melodic compositions that often feature the duelling of guitars and keyboards during lengthy complicated solos.

Vocalist James LaBrie has one of the highest – and varied – vocal ranges for a male within the genre which ranges from a ‘chesty low’ sound all the way to a strict soprano sound – E♭2-B♭5 (-B5) to be exact – he has sustained his range over the years despite two vocal injuries.

Guitarist John Petrucci is often cited as one of the world’s top 10 and ranked 6th in Guitar World’s “best shredders” list next to the likes of Paul Gilbert.

Bassist John Myung is known as the shy Asian dude with spider-leg-like fingers – in 2010, Music Radar bestowed Myung as the greatest bassist of all time.

Keyboardist Jordan Rudess has performed and recorded with David Bowie as well as British rock legends UFO’s Vinnie Moore.

Drummer Mike Mangini has worked with Steve Vai, Extreme and even appeared on the Discovery Channel show Time Warp, displaying his drum skills for high speed cameras. He currently holds 5 world records – one including the fastest drum solo without the use of sticks (meaning bare hands). His utmost documented honour of 1200 single strokes in 60 seconds is featured in the Guinness Book of Records.
Guy 1: No way man, Travis Barker and the guys from Slipknot are the greatest musicians of all time!

Guy 2: Pfft! Hardly - let's see them play Dream Theater sets!
by KSAC November 02, 2012
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One of several bands that I actually consistently like.
"Who stole my Dream Theater CD? There's going to be a reckoning!"
by Qit January 21, 2004
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The best fucking band in the world. Period.
... Forsaken in The Dark Eternal Night with my Endless Sacrifice to a Dance Of Eternity. I will rise Another Day to be In The Presence of Enemies, and then Lie to You Not Me. I' Burning My Soul in Hell's Kitchen while begging In The Name Of God to Just Let Me Breathe and Take Away My Pain. If you try to Pull Me Under, I will Raise The Knife and make you The Root Of All Evil. As I Am like Perfect Strangers to you, I will give you a Goodnight Kiss before you Disappear and get somebody to to see Through My Words .. because It's Only A Matter Of Time before I end up Beyond This Life just like A Fatal Tragedy with a Strange Deja Vu. Take a look at yourself .. in The Mirror. That's Dream Theater.
by loathsome.us August 07, 2007
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The Gods of Progressive Rock, and a band consisting living legends:
John Petrucci (Guitars and vocals - overwhelming)
James Labrie (Vocals - Better than best)
John Myung (Bass - great but seems to be by his band members)
Jordan Rudess (Keyboards, Continuum and lap steel guitar - petrucci's music twin)
Mike Portnoy (Drums, Percussion, Vocals - One of the greatest drummers)

Every1 should get DT's new album, Octavarium, it ROCKS!!
Dream Theater rules over the popular fucks in terms of 'music'(but music is all that matters!) and cannot be compared to crappy-rappy music shits.

Bitch: "yo dumbass, rap is the best, dream theater sux shit"
Me: "Well, that's cuz u don't know real music, and suck the mic 24/7, cocksucker.
Bitch: "O.."
Me: "Yeah you STFU, or i'll call Bush"\

Famous albums:
Images and Words
Train of Thought
Octavarium
by yomommy June 30, 2005
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