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As the genre became its own through the seventies, the lines between Hard Rock and Metal continued to be blurred (Van Halen, AC/DC, Judas Priest, Iron Maiden, Alice Cooper, Def Leppard, Budgie, Kiss, Motorhead, Thin Lizzy), but by 1978 the movement of pure Metal could be confirmed, and subgenres began to emerge.

To start, it helps to understand that the origins of Heavy Metal came from Rock and Roll that evolved from the Blues and Psychedelic sounds prominent in the sixties. As it took a heavier turn with the use of distortion and power chords, there came the sound known as Hard […]