U2 is a band.
How to Dismantle an Atomic Bomb is the eleventh studio album by Irish rock band U2 . `` Sunday Bloody Sunday '' is a song by Irish rock band U2 . The Joshua Tree is the fifth studio album by Irish rock band U2 . U2 are an Irish rock band from Dublin formed in 1976 . `` With or Without You '' is a song by Irish rock band U2 .