In what year were Black Sabbath inducted into the Rock and Roll Hall of Fame?

Black Sabbath were an English rock band, formed in Birmingham in 1968, by guitarist and main songwriter Tony Iommi, drummer Bill Ward, bassist and main lyricist Geezer Butler and singer Ozzy Osbourne. Black Sabbath 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, with Iommi being the only constant member throughout its history.

In November 2005, Black Sabbath were inducted into the UK Music Hall of Fame, and in March 2006, after eleven years of eligibility, the band were inducted into the U.S. Rock and Roll Hall of Fame. At the awards ceremony Metallica played two Sabbath songs, "Hole in the Sky" and "Iron Man" in tribute.

They were ranked by MTV as the "Greatest Metal Band" of all time, and placed second in VH1's "100 Greatest Artists of Hard Rock" list. Rolling Stone magazine ranked them number 85 in their "100 Greatest Artists of All Time". They have sold over 70 million records worldwide. They have also won two Grammy Awards for Best Metal Performance, and in 2019 the band were presented a Grammy Lifetime Achievement Award.