If you have an opportunity to watch this it is impressive:

Click here: YouTube – Chinese Ballet Circus pas de deux troupe du Guangdong

Claude Bessy (head of the ballet de l’opéra de paris)introduces: Chinese Pas de deux to Swan Lake circus performance of very high level! Performed at the Circus Festival of Monacoif you want to see some videos of the school of the ballet de l’opéra de Paris try this:
You can find many more by adding the tags “l’école de ballet opéra de paris” in the searchbox
I don’t know what the song is. if anyone knows please feel free to post.