An early review of the movie, from AICN, and it mentions the score, or lack-there-of:
By Hung Lo: "The lack of any real sort of musical score really seemed to take away from what is a very good, but could have been great superhero film."
Also, this small, albeit very informal and lackadaisical review comment by "pregnant man" on the same page, "the music rocks, there's time you want to headbang." Uh, okay.
That doesn't sound too good.