I really love heavy metal music. Do you know much about it?
Heavy metal music is a genre of rock
I started listening to heavy metal music in high school when a friend had me listen to Metallica. Do you like it?
No.It was developed in the late 1960s and early 1970s
What are some of the leading heavy metal bands?
It developed largely in the United Kingdom
Interesting! When was it introduced in the United States?
In the 1968 three of the genre most famous acts Led Zeppelin, Black Sabbath
I love Led Zeppelin! They have really influenced many bands. 
Inearly 1970 bands in the new wave of British heavy metal such as Iron Maiden and Saxon followed