Heavy metal is a genre of rock music that developed in the late 1960s and early 1970s, largely in the United Kingdom.
That's interesting. How did that happen?
It originated from,  With roots in blues rock and psychedelic/acid rock, the bands that created heavy metal developed a thick, massive sound, characterized by highly amplified distortion.
Cool! What are your favorite heavy metal bands?
Def Leppard are an English rock band formed in 1977 in Sheffield