Singer Mercedes Sosa ` ` lived her 74 years to the fullest , '' her son says . Born on July 9 , 1935 , in San Miguel de Tucuman , Argentina , Sosa produced 40 albums during her musical career , and performed at places such as the Sistine Chapel at the Vatican and New York 's Carnegie Hall . She had suffered from liver , kidney and heart ailments , the Post reports . ` ` Her voice always carried a profound message of social engagement , '' her site says . Viewing to be held Sunday at the Palace of the Congress in Buenos Aires .
Singer Mercedes Sosa ` ` lived her 74 years to the fullest , '' her son says . She had suffered from liver , kidney and heart ailments , the Post reports . ` ` Her voice always carried a profound message of social engagement , '' her site says . Viewing to be held Sunday at the Palace of the Congress in Buenos Aires .