David Prior was asked at the Home Theater Forum site why there weren't any features on the Blu-ray about the score

In brief, the film had a very rushed post-production schedule trying to hit that December release date and it precluded any serious participation from those artists most heavily involved in post, i.e.: sound design, score and color correction. I know Ren Klyce was working round the clock for weeks on end to hit the delivery, and I pestered Trent and Atticus numerous times to no avail. I have no doubt they wanted to participate, but with my disc delivery date coming so close on the heels of the film's delivery date, it just wasn't possible.