Description
It is regarded by some critics as the foundation of doom metal, stoner rock, and sludge metal. Guitarist Tony Iommi and bassist Geezer Butler downtuned their instruments during the production, achieving what Iommi called a “bigger, heavier sound”.
Master of Reality peaked at number five on the UK Albums Chart and number eight on the US Billboard 200. Negatively received by critics on release, the album is now considered one of the greatest heavy metal albums of all time.