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Doom metal, a subgenre of heavy metal music, is known for its slow, heavy, and dark sound. Originating in the late 1960s and early 1970s, doom metal is characterized by its use of slow tempos, distorted guitars, and eerie atmospheres. The style has been influenced by various heavy metal bands, including Black Sabbath, whose guitarist Tony Iommi is considered one of the pioneers of the genre.