When we look beyond the surface of the words, the song 'Underworld' by Devlin presents a dark and intense theme through its use of metaphors which include 'flaming womb' and 'wings of death' to show how people experience their inner demons and past battles. The underworld's repeated calls function as a metaphor for the way negative forces and difficulties create an unending struggle that demands listeners to tackle their challenges. The lyrics of Underworld present a range of emotions which include angst, despair, anger and reflection and solitude. The song demonstrates how darkness and death serve as essential elements because they establish contact with the underworld and determine our destiny. The lyrics contain themes of darkness, death, and references to the underworld, which may be considered inappropriate for children under 13. The theme needs parental guidance because the imagery and language establish a mature theme that needs parental guidance.