Unfortunately I'm at work and can't post a video, but someone else should do it.
This is a Swedish folk/indie band, and they're like fifteen years old.
Since Sweeden is made of win already, check them out.
First Aid Kit on MySpace Music - Free Streaming MP3s, Pictures & Music Downloads
Here's a link to a dope Fleet Foxes cover
YouTube - Fleet Foxes - Tiger Mountain Peasant Song (Cover)