United States

Crowbar is an American sludge metal band formed in New Orleans, Louisiana in 1990. The band is fronted by vocalist/guitarist Kirk Windstein, Crowbar's sole constant member. 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. The band are also known for their covers of 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.

https://en.wikipedia.org/wiki/Crowbar_(American_band)