Bobbin
Honorary Master
OK. When does rock become metal? And all the various things that rock gave birth to.
I would say heavier distortion and darker sounding chord progressions with a lot more drop tuning on average.
But it's more of a spectrum than a hard line though and personal opinions differ/overlap. For example many people might classify Ghost as heavy metal, but to me it's borderline. I'd say they average more around hard/dark rock than heavy metal.
Black Sabbath/Judas Priest are regarded as the more prime examples of metal origins, but there's some earlier arguments to be had too.
To me just the darker sound of Black Sabbath - Black Sabbath is unmistakably metal
Modern metal is a very different beast though.
