Who was the first heavy metal band?
Heavy metal music
Metalcore, a hybrid of extreme metal and hardcore punk,[268] emerged as a commercial force in the mid-2000s decade. Through the 1980s and 1990s, metalcore was mostly an underground phenomenon;[269] pioneering bands include Earth Crisis,[270][271] other prominent bands include Converge,[270] Hatebreed[271][272] and Shai Hulud.[273][274] By 2004, melodic metalcore—influenced as well by melodic death metal—was popular enough that Killswitch Engage's The End of Heartache and Shadows Fall's The War Within debuted at numbers 21 and 20, respectively, on the Billboard album chart.[275]