Paranoid is the second album by the British heavy metal band Black Sabbath. It was released in the United Kingdom during September 1970, and contains some of their most famous work, including the songs “Iron Man”, “War Pigs” and the title track. The album is regarded as a classic of the heavy metal genre and one of the most influental heavy metal albums. It has been certified 4x Platinum, having sold over four million copies in the US alone, making it Black Sabbath’s best-selling album. After the release of their debut album in February 1970, Black Sabbath returned to the studio in June that year, again with producer Rodger Bain, to record their second album. The album was recorded at Regent Sound Studios and Island Studios in London, England. The album’s eponymous single “Paranoid” was written in the studio at the last minute. As drummer Bill Ward explains: “We didn’t have enough songs for the album, and Tony just played the [Paranoid] guitar lick and that was it. It took twenty, twenty-five minutes from top to bottom.” In comparison with their previous album, the songs on Paranoid were given more focus and direction, with less improvisation. However the lyrical content is equally as dark, exploring themes such as war, mental illness, drug abuse and sci-fi horror. Much of the album could be viewed as a kind of social commentary. Spin magazine wrote that the band “saw heavy rock as a way to emulate the horrors of a fallen world.” The lyrics of the opening song, “War Pigs