Hello, does anyone know the dramatic orchestral piece used in the following Killzone trailer? -

Killzone Shadow Fall - Oaths and Promises | PS4 - YouTube (http://www.youtube.com/watch?v=UuG0jiYkk9s)

I've been looking everywhere and cant find a shred of information, whether it's part of the game's OST, a track from a trailer music company (Audiomachine, Killer Tracks, etc), just a small piece made specifically for the ad, or above all; the artist. (And if no one knows, can anyone point out a site where I could find out?)

Any help would be appreciated.