Half-Life 2 lends itself to a lot of different styles and moods. As such, it seems as if you could almost put just about any soundtrack behind it, granted it fit properly. But, of course, the prevalent atmosphere in the Half-Life 2 series is melancholia. After all, the Earth has been invaded by a totalitarian multi-dimensional alien empire picking Earth to the bone for its now-dwindling resources. There are no more children, and genocide has taken most of the world’s population.

So while you could, in theory, make an improved HL2 soundtrack using Haddaway’s “What Is Love”, the HL2 series really does lend itself to more somber sorts of music. Which brings us to…