'Master of Reality' is Black Sabbath's iconic third album, a dark and heavy landmark that helped shape the blueprint for metal. Released in 1971, it dives deeper into the band's signature mix of crushing riffs, brooding atmosphere, and doom-laden lyrics. With classics like 'Sweet Leaf' and 'Children of the Grave', the album combines Sabbath's signature heaviness with a more experimental edge, including the use of down-tuned guitars and eerie, psychedelic elements.