Typically, Black Sabbath. Some people try to claim Steppenwolf, given their use of the line "heavy metal thunder" in their song, "Born To Be Wild", but that's pretty weak reasoning, not to mention Steppenwolf didn't deviate from other Rock bands of the era.
Yes, because it was.
Sammy Hagar .
Per Wikipedia, a version of "Summertime Blues" by Blue Cheer (January 1968).
Metal.
Skipknpot released the song Duality in 2004. It was their first single off their third album Volume 3 Subliminal messages. They are a heavy metal band
The "first" heavy metal song would be Blue Cheer's cover of Eddie Cochran's "Summertime Blues."
Heavy Metal Lover - song - was created in 2011.
Heavy Metal Lover - Lady Gaga song - was created in 2011.
Yes, because it was.
the growls and the heavy music is what makes it death metal
metallica
Sammy Hagar .
Per Wikipedia, a version of "Summertime Blues" by Blue Cheer (January 1968).
In This Moment
Metal.
The song "Metal Heart" was released by the German heavy-metal band called Accept in the year 1985. The song can be found on the band's "Metal Heart" album.
Slipknot