Sepultura's "Under Siege" serves as a pivotal track on their 1991 debut album, "Arise." Released during the band's transition from thrash metal to a heavier, groove-oriented style, the song exemplifies the raw energy and technical proficiency that defined their early career. The title, referencing the biblical "Regnum Irae" or Kingdom of Wrath, underscores the aggressive themes prevalent in their work of that era. As a cornerstone of their discography, the recording helped establish Sepultura's reputation as a formidable force in the global metal scene, influencing countless bands to follow with their own fusion of speed and power.