I have never heard of techno viking. What is it?
He is famous amongst techno fans 
What is the story with techno viking?
Its a vital video of him dancing walking through the streets and dancing with a big group of followers while a vehicle blasting techno is cruising in front of him
Do you know who Sven Vath is?
No i am not sure i have
I think he is from a different country and does techno.
Cool ! i will check him out 
I am sure you will like him since you love techno so much! 
I am sure i will i am listening to techno right now actually