black metal

Iron, or similar metals worked by a blacksmith

(music) A subgenre of heavy metal employing fast tempos, shrieked vocals, highly distorted guitars, double-kick drumming, raw recording and unconventional song structure, often emphasizing antireligious and misanthropic themes.

(music, dated, 1980s and early 1990s) Any form of extreme metal having a Satanic or anti-Christian theme.