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1.
n.

1. A style of music derived (obviously) from rock with heavy emphasis on dynamic contrast. Many post rock acts use singular themes in a a song and build upon them harmonically and dynamically. Several post rock bands include Slint, Mogwai, Godspeed You Black Emperor!, Explosions in the Sky, and Tortoise.
I enjoy post rock music.
by Sommy July 09, 2004
 
2.
In some cases referred to as space rock, a genre of music combining styles of prog, ambient rock, indie, experimental, jazz, psychadelia, and some classical. Often utilizing large bands with diverse instruments including brass, chimes, strings, synthesizers, assorted percussion, and winds, many post-rock bands create a very mellow, atmospheric style of music, often climaxing and making use of tonic/dominant/subdominant patterns in classical music and heavily textured sonic layers. Elements of poetry and science fiction are also often incorperated.
Mogwai, Laika, Tortoise, Godspeed You Black Emperor, Silver Mount Zion
by b1lskirnir April 08, 2005
 
3.
Post rock is a genre of rock music coined by British music Simon Reynold as "using rock instrumentation for non-rock purposes, using guitars as facilitators of timbres and textures rather than riffs and powerchords." Post Rock will often times be built like classical music with different movements and emphasis on musical composition and dynamic movements. Common instruments used by post rock bands are guitars and basses as well as drums, auxillary percussion, string instruments, pianos, and even bagpipes and the occasional tape loop run through the record.
"I saw this band called Godspeed you! Black Emperor last night"
"Were they any good?"
"Oh yeah, they totally post-rocked"
by Blackbird June 27, 2005
 
4.
A style of music conceived after Beethoven, Bach, and Mozart had passionate, time traveling, inanimate sex with classic Rock albums from Bands ranging from ACDC to Lynyrd Skynyrd. The resulting child has guitar riffs that make Hellen Keller listen again, songs that speak volumes without saying a word, and (If you listen with your eyes closed) the music will give a high so high that you can throw piss bombs on Stealth Bombers as you experience an eargasm so profound that your mind will be blow, reformed, then blown again. In other words: Post-Rock is the musical equal to a Chuck Norris Roundhouse Kick to the unprotected groin.
Post-Rock

Man 1: Hey kid listen to this. *Extends earphones playing blissful utterances of Angels (AKA Post Rock)

Boy 2: Okay bro *Places blissful musical blissfulness into his virgin ears*

*Boy magically transforms into Man and learns answers to life's age old question's: The egg came before the chicken because it takes a rooster to make the egg an embryo. The price off eggs in China is $0.00- You get eggs given to you by the Honorable Chairman, not bought you ignorant capitalists. Solo did shoot first.*

The two men then look into each others eyes. Nod agreeably then part ways. Brothers in Rock. Enlightened and bonded forever.
by MasterLuigi January 30, 2012
 
5.
Rock: made by musicians who trash the hell outta their hotel room.

Post-rock: made by musicians who arrive at their hotel room to find it already trashed.
The world's gone to hell. Lets play some post-rock.
by richardcam July 10, 2011
 
6.
Tuneless geeks that can't sing playing simple, boring songs which repeat far too much and are about ten minutes too long.
Post rock is totally lame, every1 should listen to metal cos' metal is bitchin' \m/(>_<)\m/
by Aye Right Then Min August 12, 2008