Classical music piece, help?

[singing_tree]

Out of boredom I started watching Meteor Garden, and in the first episode there's a small piece of music playing which I want to know the title and composer of but ARGH I can't find it anywhere! It's in lots of movies and it's beautiful and spooky. I was sure it was from Swan Lake but seeing as I can find nothing of it..

Click to view

It starts around 6:01, it's very short.
Oh mighty flist with more brains than me, can anyone help me out???