Bono (L), lead singer of the Irish rock band U2, performs during the first concert of the U2 "360 degrees" world tour, linked to its new album "No Line on the Horizon" at the Camp Nou stadium in Barcelona on June 30, 2009. The band, whose career spans nearly three decades, returns home on July 24 to play Croke Park in Dublin before heading for Sweden, Poland and Croatia and then five gigs in Britain. They then head over the Atlantic, with their first show in the US and Canada leg of the tour at Chicago's Soldier Field on September 12.