The opening of Pedropiedra's song "Historias de terror" sets a dark and eerie tone with the line "La noche es tenebrosa" (the night is ominous) and the suggestion that they are not alone with "y están todos acá" (and they are all here). The following lines, "las luces y las sombras saben contar" (the lights and the shadows know how to tell), imply that there are stories to be told, stories of terror. The chorus repeats the phrase "historias de terror" (stories of terror), juxtaposing it with the image of a gray forest that the narrator is awake in his dreams. The narrator pleads with a voice to lower itself and wait for him to sleep so that he doesn't have to hear it anymore.

As the song progresses, we are introduced to the image of an industrial fire that powers the "fierros y martillos" (irons and hammers) that "saben gritar" (know how to scream), suggesting that the inanimate objects have a life and voice of their own. The chorus of "historias de terror" returns with the image of a thousand men fighting in vain. The bridge of the song brings a new character; a man who killed a woman who represents all women and refuses to provide an explanation. The following lines express the pain of a million old mothers who have lost their children and the fear that comes with such a loss. The final chorus has a juxtaposition with the narrator's "mi" (my) peor temor (worst fear) and evolves into "tu" (your) peor temor (worst fear), showing that these stories of terror are a shared experience.

This song explores horror themes that are not just limited to ghosts or supernatural forces. Instead, it delves into the horrors that can be found in everyday life, such as industrial accidents or a woman being killed by a man. This song reminds us that horror can be found in the mundane and that we must confront these issues.