There is a video clip which you should watch - it features mostly the music from Halo 1 which is music that I feel really does warrant a symphonic performance. The performance is complete with what seems to be a full symphony, and the original? vocalist and of course plenty of drums.
They give the complete list of video game songs that are featured.
Found this link on the Bungie site
http://www.videogameslive.com/index.php?s=homeThink I'll put in the old Halo 1 disc and let the loop play.