Deep Purple - Highway Star [Original Live]
Back to the question of when did “hard rock” transform to “heavy metal”…
Deep Purple - Smoke On The Water (Live, 1973)
The turning point when “hard rock” became “heavy metal”?
From Wikipedia:
Heavy metal (often referred to simply as metal) is a genre of rock music that developed in the late 1960s and early 1970s. With roots in blues-rock and psychedelic rock, the bands that created heavy metal developed a thick, heavy, guitar-and-drums-centered sound, characterized by highly amplified [...]
Rob Zombie - God of Thunder
A video clip of the all-star band consisting of original KISS guitarist Ace Frehley, ex-GUNS N’ ROSES axeman Gilby Clarke, Rob Zombie (vocals), Slash (guitar; VELVET REVOLVER, ex-GUNS N’ ROSES), Tommy Lee (drums; MÖTLEY CRÜE), and Scott Ian (bass — yes, bass; ANTHRAX) performing the KISS classic “God of Thunder” as a tribute to [...]