That very brief bit of music at the end of the trailer is the instrumental 'theme' track from the first Silent Hill (which accompany the opening CG sequence).
Hmmm, not exactly sure what to say of the trailer itself. It's a cocktail of different scenes from the movie, done in a very typical way (making it look exactly like so many other horror movies out there: "Check out this cool scene, now check this out, and this!"). So as far as the trailer is concerned, it unfortunately trivializes the otherwise potent, elliptical 'poetry' of the Silent Hill world.
But the spitting straightjacket zombies look and the nurses look great. The story is essentially a repeat of the first Silent Hill, except that Harry Mason has been replaced by a woman, and she can actually make phone calls (?) from the otherwise 'dead zone' town.
Thanks, Jake.
