“The idea was to make an album heavier than anything that had ever been heard before”: Tony Iommi recalls the making of Black Sabbath’s legendary debut

Black Sabbath in 1970.

Black Sabbath’s first album is effectively ground zero for heavy metal - and as guitarist Tony Iommi recalled, it was an album made under intense pressure.

In 2013, Iommi told Classic Rock how Sabbath recorded the album with an incredibly tight deadline and with a vision to revolutionise rock music.