British singer Dido (R) performs with Senegal's Youssou N'dour at Africa Calling, one of the Live 8 concerts, at the Eden Project in Cornwall, southwest England, July 2, 2005. A galaxy of rock stars staged the world's biggest live concert on Saturday to pressure rich nations into doing more for the poor. [People power rose up across four continents as Irish rocker Bob Geldof urged music fans at Live8 gigs around the globe to cry ``No more excuses'' to the G8 leaders of the world's leading industrialized nations.]