“Heavy Metal” chart from Sounds May 9 1981. The classification of what is and what isn’t heavy metal have changed pretty much.
METAL ARCHIVIST & OLD SCHOOL METAL HEAD … OBSESSED WITH HEAVY * THRASH * DEATH * BLACK * DOOM * HARD ROCK *
METAL ARCHIVIST & OLD SCHOOL METAL HEAD … OBSESSED WITH HEAVY * THRASH * DEATH * BLACK * DOOM * HARD ROCK *