Battle Royale

[trailer_fan]

BATTLE ROYALE trailer -- Coming soon to blu-ray & dvd

In this trailer, the music from 0:44 to the end is Raindrop Prelude by Chopin, but what I want to know is that from 1:08 to 1:31, is it a real orchestration of Raindrop Prelude (and if so, who performed it), or was it added just for the trailer?

 

[trailer_fan]

Here's the proper link to the trailer since I somehow can't edit the original post: