A song has three main elements - the melody, the lyrics and the accessories. Accessories include the intro, the outro, the harmony and the accompaniment.

In Choucoune we have a beautiful melody with words that have outlived their time. Adult males seducing teenagers is no longer considered acceptable by the civilized world. (We know she's a teenager because if were a mature village woman of say, 20, she would be married and raising children.)

So somebody borrowed the melody, wrote new words, added a flute part, and voila "Yellow Bird" was born. I was a kid, and I loved it, especially the flute part. I still like it and sing it, and I play it on my mountain dulcimer.