The Cranberries' lyric asks, “In your head, in your...” and the canonical answer is “head.” The repetition is deliberate and forms the song's best-known refrain, so “mind,” “heart” and “dreams” are not alternate versions of the line.
Dolores O'Riordan wrote “Zombie” after the 1993 Warrington bombing in England, which killed two children during the period known as the Troubles in Northern Ireland. She initially developed the song acoustically, then pushed the band toward a much heavier electric-guitar sound because the subject demanded anger and force.
Released in September 1994 as the lead single from No Need to Argue, “Zombie” marked a striking change from the Cranberries' softer pop style. Its distorted guitars and shouted vocal helped it become an international alternative-rock anthem.
The title is metaphorical rather than supernatural. It evokes the way violence, grief and political conflict can leave people emotionally numb or mentally trapped. Some interpretations focus on the dead victims; others emphasize the images and memories lodged in survivors' minds. Neither interpretation changes the repeated answer: “head.”