At the Porthcawl concert, Robeson was introduced by Will Paynter, the President of the South Wales Miners Federation and a veteran of the Spanish Civil War.
Yng nghyngerdd Porthcawl, cyflwynwyd Robeson gan Will Paynter, Llywydd Ffederasiwn Glowyr De Cymru a chyn-filwr Rhyfel Cartref Sbaen.