So whilst the movie threw a 'runners' spin on genre, John Murphy's soundtrack on the other hand really hits the spot.
Slow building, haunting and and subtly discordant, the Original Soundtrack makes a superb backdrop to any zombie game.
Personally, I would mark this as the first of the 'modern' Zombie scores, heralding in a new era of themes specifically for the genre as we know it today. As a stand alone soundtrack it is not specifically innovative. It relies upon the standards of the horror genre in building tension and conflict, music box style melodies with contrasting resonance in the strong section but I'm pretty sure it has influenced composers of the genre since it's release. For example, as it is hard not to hear its influence in Bear McCreary's work.