George Palmiter

Hey guys, So i've always been a pretty die hard fan when it comes to the soundtracks for Halo games but recently with the release of Halo 4 Soundtrack vol. 2 I've found myself with a little bit of an issue.. My issue revolves around a specific track that is found playing in the background of the 4th terminal in the campaign (Flood). This particular track really moved me. It was deep, well balanced and compelling. It always managed to send a cold chill down my spine. Additionally this particular track sounded VERY similar to the track "Legacy" in Vol. 1 of the Halo 4 soundtrack. In fact i could almost say that they are exactly the same... but... it seems as though a rather large chunk of the song was cut out when it made its way onto the soundtrack. Specifically the part of the song near the end of the terminal video. As evidence I submit this: first listen too the terminal video focus on the background music then listen to the actual track http://www.youtube.com/watch?v=V5NDbTjwpVk I literally listened to the two videos side by side and i couldn't tell which video I was hearing, with the exception of the voices of corse. Then about 60 seconds in they split. Can anybody tell me what the deal is? Maybe where i might find the version used in the terminal?