Heavy metal is a genre of rock music that developed in the late 1960s and early 1970s.
I don't understand heavy metal.  I just can't stand how loud it is
I don't really care for it, either. The lyrics and perfomance styles are associated with aggression and machismo.
I did not know that.  The aggression really makes sense.  The music is very aggressive
Yes it is. I think that's why I dislike it so much. One positive of metal is that it has its roots in blues.