Now that I've recovered from my Super Bowl hangover, here's the promised conclusion to my three-part review of Halo 3's soundtrack.
Edge Closer starts out airy and atmospheric but soon turns into something like a technofied, up-tempo version of Covenant Dance as you fight your way back out from the map room for extraction, finishing with another drum-pounding Pelican pickup that is very similar to the one that ended the very first level.
Finish the Fight gets turned into a combat anthem for Three Gates, a rollicking piano heavy piece that starts during the introductory cutscene for The Covenant and continues to play as you fight your way from the beach to the first of three towers you must disable in order to follow Truth to the Ark's control room. In the interior sections we get an interesting mix of electronic and acoustic percussion.