Infusing a slow, brooding doom metal sound with the aggression of hardcore punk, Crowbar along with other bands in the New Orleans heavy metal scene pioneered a style known as sludge metal, though Windstein himself has admitted a dislike for the term.[2] The band has also covered songs from outside of their immediate genre; these include Gary Wright's "Dream Weaver" on Equilibrium, Iron Maiden's "Remember Tomorrow" on Odd Fellows Rest, and Led Zeppelin's "No Quarter" on Crowbar.
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