Master of Reality is the third studio album, released in 1971. It reached #5 on the UK-, and #8 on the U.S. Album Charts, immediately going gold. It was Black Sabbath’s first album to debut in the Top 10. Also their first album to feature the heavier new sound created by dropping the tuning three semi-tones below the standard E, thus creating the premise for what would become known as the stoner rock sound.
Some early German, US and Canadian pressings had the title incorrectly printed on the record labels as 'Masters Of Reality'.
