be free ♪ ♪ saying you don't have to live like a refugee ♪ ♪ don't have to live like a refugee ♪ ♪ all we hear is radio ga ga ♪ radio goo goo ♪ radio ga ga >> the great thing about live aid, it showed that musicians for me seemed to be the most altruistic people in the world. >> a group whose heart is in dublin, ireland. [ cheers and applause ] whose spirit it in the world. a group that's never had any problems saying how they feel. u2. >> when u2 play live aid, things had changed. rock 'n' roll was getting serious. music could change the world. bono could change the world. ♪ sunday bloody sunday ♪ sunday bloody sunday >> u2, formed ten years ago when its members were still schoolboys, is now arguably the hottest rock 'n' roll band in the world. their last album "the joshua