Immigrant Song was released by Led Zeppelin in 1970 as the opening track of Led Zeppelin III, inspired by the band's tour of Iceland and Norse mythology about Viking voyages to new lands. Its opening scream and staccato riff later became one of rock's most reused entrance cues in film, trailers, sports and games. Online, editors shortened it into a punchy team anthem, and this version circulates as a Blue Team theme, attached to entrances, victories and mock-heroic squad moments.