I don't know much the music from some areas of the world, but I can say I mostly listen to British music, with some American. There are other bands/singers that are not British or American, but they mostly write their songs in English language (like the above mentioned Bjork and many others). So I don't know if the country in that case counts. Of course the style of French or Scandinavian or German music is different, but if the musicians decide to not write in their own languages, that influences the style as well.
Sometimes I listen to some Japanese music too, but I can't say my fave music comes from there