ANKARA The Presidential Symphony Orchestra ( CSO ) tonight will present the world premiere of a stage cantata composed as a lament for wars, violence and child deaths around the world, under the direction of the distinguished conductor Rengim Gökmen. Titled “Voices and Ashes: A Lament Rising from a Tiny Heart Amid Darkness,” the stage cantata features a libretto written by Professor Yavuz Demir of Ankara Science University and music composed by the young and prolific conductor-composer Hasan