Fourth studio album by the Irish rock band, originally released in 1984. The band wanted to pursue a new musical direction following the harder-hitting rock of their previous album, 'War' (1983). As a result, they employed Brian Eno and Daniel Lanois to produce and assist in their experimentation with a more ambient and abstract sound. The resulting change in direction was at the time the band's most dramatic. The album's title is a reference to 'The Unforgettable Fire', an art exhibit about the atomic bombing of Hiroshima.