I hardly ever listen to non-english songs, but when I do I make sure they are really good.
Here's a short introduction to the girl:
Danica Krstic (Danica Krstić) is a serbian ethno (old-traditional) music singer.
She's been singing since the age of 6. And she's consider a big pro by now.
The music is calming and emotional. The lyrics are usually about nature, and love.
The music is also very soulfull.
But you be the judge. P.s. some songs need more than one listening, but at the end, they are all worth it. Here are some of my faves(don't know why but the youtube won't allow them to play in here so I just copied the links):
