music?

I have always loved this movie. I used to watch it a lot when I was a kid, and I hold it responsible for inspiring me to read literature by Thoreau.

I've always had a question about it though...

At one point in the movie, Bando makes a flute while he is singing in a language that is not English. He then procedes to play the tune on the flute, and we later see (and hear) Sam playing the same tune. That melody also plays during different parts of the movie -such as during the winter, when Sam is remembering being at home and thinking about how empty his little world seems -being covered in snow. If anyone has any idea what the name of the song is and its composer, I would be grateful!