Killers

Killers is Iron Maiden's second studio album, released in 1981. It is the last to feature vocalist Paul Di'Anno and the first to include guitarist Adrian Smith. Musically it channels the raw energy of the new wave of British heavy metal with punk-influenced vocals, leaner production, and a growing emphasis on twin-guitar harmonies and more elaborate song structures. Produced by Martin Birch, the record documents the band's transition from their initial raw sound toward the more melodic and expansive direction they pursued afterward.