In the Flood it is said that the ODST play their anthem. Nothing is touched upon regarding it since, but that got me thinking.
[url=http://www.youtube.com/watch?v=m9ocAUQnNdE&feature=related]What if this is the actual anthem[/url]
The very song used in the live action trailer.
-
They also said their anthem was flip-music, if I recall correctly. I think they said it was like classic metal. So, I highly doubt that slow song would constitute the ODST anthem.