Genre: Rock
Crowbar is an American sludge metal band from New Orleans, Louisiana, characterized by their extremely slow, low-keyed, heavy and brooding songs that also contain fast hardcore punk passages. Crowbar is considered to be one of the most influential metal bands to come out of the New Orleans metal scene.
The band dates back to 1988, when Kirk Windstein joined the premiere hardcore punk band Shell Shock in New Orleans. He met Jimmy Bower, who was their drummer, and both quickly became friends. The band collapsed when Mike Hatch, their guitarist, committed suicide in late 1988 (some Pantera fans believe that this was the inspiration for the song "Hollow" off of their 1992 album Vulgar Display of Power).
Source: http://en.wikipedia.org/wiki/Crowbar_(American_band)