Tony Iommi is the lone member of Black Sabbath to appear on all 19 of the studio albums. In fact, 1986's Seventh Star was initially meant to be an Iommi solo record before last minute pressure from their label led it to being released under the Black Sabbath moniker.

Having influenced scores of metal guitarists, Black Sabbath's Tony Iommi confessed to seeing any attempt at mimicking their pioneering sound as a futile task.

With a pioneering sound that essentially created the genre of heavy metal, it’s no overstatement to call Black Sabbath one of the most important rock bands of all time. In 1967, bassist and lyricist Geezer Butler formed Rare Breed,