[b]Black Sabbath[/b] were an English rock band formed in Birmingham in 1968 by guitarist Tony Iommi, drummer Bill Ward, bassist Geezer Butler and vocalist [[Ozzy Osbourne]]. 

They are often cited as pioneers of [[heavy metal]] music.

The band helped define the genre with releases such as Black Sabbath (1970), Paranoid (1970), and Master of Reality (1971). The band had multiple line-up changes following Osbourne's departure in 1979, with Iommi being the only constant member throughout its history.

h1. See also
Wikipedia: "Black Sabbath":https://en.wikipedia.org/wiki/Black_Sabbath
Metallum:  "Black Sabbath":https://www.metal-archives.com/bands/Black_Sabbath/99
black sabbath