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1.
A game created by Harmonix, involving the simple concept of Guitar Hero, but throwing in a mic, a bass, and drums. It provides a sense of creating your own band, and playing music, without the years of experience on a real instrument! You can form a band via Xbox Live, to have your girl from Hawaii singing, a good friend in Amsterdam on drums and a buddy in Chicago on bass, or you can just have friends come over and enjoy a "virtual garage band" experience. It will be released on November 20th, 2007 for the Xbox 360 and Playstation 3 consoles. A PS2 release is scheduled for 2008. There is a bundle with all instruments at around $200, but the game itself is $60. It will provide backwards compatibility with a Guitar Hero guitar for those who don't want to spend $200. Also available are downloadable albums with all the songs, from the album, playable in the game. (The Who's "Who's Next" album, the first out of many albums that are going to be released), seperate songs and other DLC on the Xbox Live Marketplace, and PS3 Network, for a microtransaction of course.

If you're interested, you can check out www.rockband.com to see in-depth info on the game.
I can't wait to bang on those drums in Rock Band!

I can't wait to sing on the mic in Rock Band!

I can't wait to jam out on the guitar in Rock Band!

I can't wait to slap that bass in Rock Band!
by Max B. K. September 06, 2007
 
2.
Actually Drum Hero, but with Guitar Hero and Karaoke Revolution added for free.
Harmonix CEO: So how's Drum Hero going?

Harmonix Employee: pretty good, I think this game will be an amazing successor to our Guitar Hero

Harmonix CEO: But who will play a game with just drums? Lets throw in a couple of our guitars, Karaoke Revolution, call it Rock Band, and have it ready for me by Christmas.

*lights cigar with $100 bill and jumps into private jet*
by badboys213 November 18, 2007
 
3.
n. A game played non-stop by all who purchase it. This game consists of drums, guitar, and a mic. People play all of these insturaments to pre-recorded versions of song.
"Craig, Paul , Dennis, Caroline and I played Rock band for 12 hours the other day"
by Snuzzel Umpkin April 01, 2008
 
4.
Annoying the hell out of neighbors since 2007.
Does the guy next door playing Rock Band really think he can sing because it just sounds like someone is dying over there. And the drums... oh the drums... Can someone just shoot me in the face and end it already?
by Steve martin321 February 16, 2009
 
5.
Popular music video game. You can buy up to four game controllers for this game including a bass, a drum set, a guitar and a microphone. The game is funnest when you have four players and like that you have the actual rock band feel. The game is similar to Guitar hero but the difference is you can have a drummer, bassist, and a singer.
My friends like playing Rockband instead of forming their own real rock band.
by YourMomOnFour June 18, 2008
 
6.
1. A group of people, most commonly three to five in number, who regularly congregate for the purpose of making music that will hopefully make them rich and famous and get them laid.

2. A video game for the Xbox 360 that allows a person to simulate the experience of being in a rock band. One can either sing or play guitar, bass, or drums. Can be played with everyone together in one room or separately online. Akin to what being in an actual rock band would be like if you only played covers and had more cheet on your shirt.
Guy: Hey baby, I'm in a rock band, let's do it. (Girl follows guy into cheap motel room.)

Guy: Hey baby, I play Rock Band, let's do it. (Girl stares indifferently, blinks.)
by roundthewheel January 10, 2008
 
7.
A real rock band is a group of musicians who more or less follow the principals of Rock 'n Roll.
System of a Down, Rage against the Machine, Metallica, Aerosmith, etc. are examples of a rock band