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1.
A vocal techique used in hardcore or deathcore music. When a bunch of people yell out lyrics to a song either on an album, or at a show.
Stick To Your Guns - This is More

"Rest assured, that with a heart that's pure. We'll be victorious and not let our hate get the best of us."

A good example of gang vocals.
by Whitefuckingchapel October 27, 2010