[2] 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.

Under that name they released a demo in mid-1989 and then renamed themselves again as Wrequiem, with their bassist Mike Savoie leaving the band and Todd Strange replacing him.

[4] Crowbar's debut studio album, Obedience thru Suffering, was released in 1991, but failed to achieve significant sales or airplay.

By 1993's self-titled album, personal friend Phil Anselmo (Pantera, Down, and Superjoint Ritual) produced the record, which eventually led to national promotion on MTV's Headbangers Ball.

Original drummer Nunenmacher left the band in 1996 and was replaced by Jimmy Bower from Down and Eyehategod, and for their 1996 release, Anselmo sang backup on a few tracks on Broken Glass.

In 2000, after recording and releasing Equilibrium with Sid Montz on drums, Nunenmacher rejoined the band for the "Penchant for Violence Tour" with "The Brotherhood of Brewtality" Black Label Society and Sixty Watt Shaman.

In their 2005 release, Lifesblood for the Downtrodden, Pantera bassist Rex Brown lent his bass skills and keyboard playing.

[6] As of September 2010, Crowbar is under contract with E1 Music[7] in North America and Century Media in Europe, and released their ninth studio album, Sever the Wicked Hand, on February 8, 2011.

[10] Crowbar entered the studio in late 2013 to begin recording Symmetry in Black, which was released in North America on May 27, 2014, via E1 Music.

According to Steve Huey of AllMusic, Crowbar "combines the doomy heft of Black Sabbath, the intense riffage of Pantera, and the intricate progressions of Metallica".

Crowbar's early material is said to have "[slowed] down caveman hardcore to a knuckled crawl", while their later output has been said to have "illustrated a penchant for dynamic eeriness, intermixing brutish heaviness with foreboding ether".

[21] They have cited influences including Melvins, Black Sabbath, Carnivore, Witchfinder General, Saint Vitus, and Trouble.