So, I stumbled upon a page talking about the score piece used under the trailer...
Turns out it was inspired by a cue from Brian Tyler's Children of Dune score which they had been using parts to temp track the movie... They liked it and had this group "Two Steps from Hell" extend/expand the short 1 min cue into the piece heard in the trailer...
Here is the piece: http://www.imeem.com/people/hhz_iA/music/2KihKMOL/two-steps-from-hell-freedom-fighters/
Turns out it was inspired by a cue from Brian Tyler's Children of Dune score which they had been using parts to temp track the movie... They liked it and had this group "Two Steps from Hell" extend/expand the short 1 min cue into the piece heard in the trailer...
Here is the piece: http://www.imeem.com/people/hhz_iA/music/2KihKMOL/two-steps-from-hell-freedom-fighters/
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