Black Sabbath 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.
After previous iterations of the group called the Polka Tulk Blues Band and Earth, the band settled on the name Black Sabbath in 1969. They distinguished themselves through occult themes with horror-inspired lyrics and tuned-down guitars. Signing to Philips Records in November 1969, they released their first single, "Evil Woman" in January 1970. Their debut album, Black Sabbath, was released the followi…Read more on Wikipedia