Considering the unrest and political happenings in the world right now, a website that is presumably a branch of last.fm has compiled a list of several country's top downloads and it is very interesting that you can get a bit of a sense of the feel of that country via a song, its feel, and the key it is in.
For example: just how is Bahrain feeling at the moment? What would you guess? I was thinking maybe Rage Against the Machine or maybe something Wagner-esque. Actually, its a band called "Fate's Warning." Check it out here:
Give a little listen if you want. Its what I call "death metal." Sounds like fighting music to me!!