I have found this video in a .zip on Fileplanet.com. It is about the composition of AOM' OST by Rippy and McMullan , performed by the "Northwest Sinfonia Orchestra and Chorus".
I'm not the owner of this video : at the end of it we can see a Copyright by Microsoft : if this video causes problems with Microsoft's Copyright, email me and I'll delete it immediately!
Thanks for hosting , Youtube! :)
![](https://i.ytimg.com/vi/n1UiiEHNCd4/mqdefault.jpg)