When did heavy metal develop?
in the late 1960s and early 1970s,
Is it sometimes just called metal?
yes
Where did it originate?
in the United Kingdom.
What are the lyrics associated with?
aggression
anything else?
and machismo
In 1968, what was a popular band?
Led Zeppelin
Who else?
Black Sabbath
And who else?
Deep Purple
Did they perform for small groups?
No
What did Judas Priest move away from, which genre?
its blues influence;
What did Motorhead add?
punk rock sensibility
Did it change the tempo, too?
yes
At the end of the 70's what were the fans called?
metalheads
or?
headbangers
Which group became popular in  the 80s?
Mötley Crüe
and?
Poison
Who is a thrash metal band?
Metallica,