This is a soundtrack for a mystery program, and I think it fits perfectly on its purpose. Listening to the tracks, "El Sotano Toma 1" and "El Sotano Toma 2" particularly, you can imagine a weird atmosphere in the air, for example walking alone in a dark and foggy street, or wood, only surrounded by mysterious noises... you feel a sort of increasing fear, walk a little faster, and you start turning your head behind but no! Because if you do, you'll surely see someone (or something) that follows you.
¡Enhorabuena, PeerGynt!