sentences:  Black metal is a style of extreme metal music that originated in the 1980s from the work of thrash metal bands such as Venom (from Newcastle, England) — whose 1982 album "Black Metal" coined the term for the genre, Mercyful Fate (from Copenhagen, Denmark), Bathory (from Vällingby, Sweden), Slayer (from Huntington Park, California, United States), Hellhammer (from Nürensdorf, Switzerland), Celtic Frost (from Zürich, Switzerland), and Sodom (from Gelsenkirchen, Germany).A lyrical focus that is anti-Christian, Satanist, neopagan, or a combination thereof, is often considered a prerequisite for the genre, and originally the term "black metal" was synonymous with "Satanic metal".In the late-1980s and early-1990s, the early Norwegian black metal scene, developed by bands such as Mayhem, Thorns, Immortal, Darkthrone, Burzum, Emperor, Satyricon, and Ulver, established a more specific sonic template that came to define black metal.