My all time favorite band is Metallica, they started in 1981 with a drummer and vocalist/guitarist. 
I love them too! I didn't realize they started that long ago, wow!
They were one of the founding bands of trash metal. 
Thats interesting, I always thought the term 'trash metal' is kind of funny
Yes! Their album Master of Puppets is one of the most influential trash metal albums. 
Awesome, I knew that was a popular one. How many albums have they made?
In 2008, they released their ninth album, Death Magnetic, I am unsure if they had more after that.
Oh okay I see. How many tours have they been on?
I am unsure but would think alot as they have been around a long time!
Yes it feels like they have been around forever. Have you been to any of their shows?