Stalker,
Undefined,
17 years ago
I'd prefer to stick to the traditional orchestral & instrumental music which has been present in all of the Alien & Predator films to date, even AVP had an excellent score. In serious franchise films such as this, it is vital to keep the mood & tone of both series alive, & lyrical tracks would completely ruin that in my opinion.
As far as a "theme" for Requiem, we have already heard "Silent Night, Holy Night" in the Green Band trailer, as much as I dislike the Christmas-themed release, although I have heard that some of the original score from the earlier films will make a return, which should be great.