Colmillos means "fangs" — those sharp, pointed teeth associated with vampires, werewolves, and other creatures of the night. It's a vivid, tactile word that instantly evokes Halloween imagery.
José Madero opens the song with "Capa, colmillos, disfraz" (Cape, fangs, costume), immediately setting a spooky, costume-party scene. But on a deeper level, these "fangs" hint at a darker emotional disguise — the metaphorical bite of hidden pain and jealousy lurking beneath a festive surface.
Noche de Brujas paints the scene of a Halloween-style party where everyone hides behind costumes, masks, and makeup. Our narrator shows up cloaked and fanged, but beneath the spooky get-up he feels lonely, ignored, and painfully aware that the girl he likes is focused on someone else. While colored lights flash and fog machines hiss, he slips into the background, wondering why she invited him if he is destined to feel like a ghost even without a sheet over his head.
The lyrics play with the idea of disguise, asking repeatedly “¿De qué es tu disfraz?” – What are you really hiding behind? The singer questions whether her cheerleader costume is meant for him, for another guy, or to cover her own inner turmoil. In short, the track is less about monsters and more about the fear of emotional invisibility, showing how a festive night can expose heartbreak instead of concealing it.