song title?

[kudra]

The music at the beginning of this mp3

http://www.hsk.org.cn/Common/Wave/HSKjj1.mp3

sounds very familiar. Is it a famous folk song? It seems odd to me that it sounds familiar. Perhaps it was used recently in a movie, or possibly some version of it was part of Yoyo Ma's Silk road project that I heard parts of recently on the radio here in Chicago? Possibly the old woman who plays the Er Hu in the subway in Chicago?

1. Name of the song?

2. Recent use where a guy in Chicago might have heard it recently?

Thanks.