I'm assuming you are from the US, so I will educate you on Sweden. Sweden is the third-largest country in Europe by area so it's pretty big!
That's fairly big. What kind of bands are popular in Sweden?
Well, a quick wiki search for music of Sweden shows that they love polka, schottische, waltz, polska and mazurka. Sounds very foreign to me!
That's all fine and dandy, but what kind of modern bands are popular? Any metal bands? I'm not a fan of polka, but I think my grandma is.
Some modern bands from Sweden are Dungeon, Bob Hund, and BWO. 
Now we're talking! Where do you think is the best place to go and see them? Any cool concert venues?
Hultsfred Festival
The Hultsfred Festival () is an annual music festival held in Hultsfred, Sweden. It takes place at the lake Hulingen during three days in the June or July, from Thursday to Saturday. Since the first festival in 1986, its attendance has increased from 7,500 visitors to approximately 32,000 people in 2005. With its five different stages, the Hultsfred Festival hosts a large number of bands per year (154 in 2007) from all over Scandinavia and the world alike.
Due to an increase of ticket pricing
wanted to make some more money so they became rock bands. I played the blues then and I play the blues now. That's what I love. ... It's a living thing, it's living music. By living and breathing it goes on and what that means is that instead of being the same kind of music somebody else wrote years ago, it lives and evolves. Blues is serious stuff, it's a heavy kind of music in your soul. You show up with the blues I play, you