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(FILES) In this file photo taken on May 28, 2020 Algerian singer Soolking (L) and French singer Dadju perform on stage during the recording of the show "Ensemble a l'Olympia" for the benefit of Emmaus at the Olympia concert hall in Paris. - When Soolking released "La liberté" in March 2019, the streets of Algiers were boiling over with anger and the song became an instant success with protesters demanding freedom and democracy. (Photo by BERTRAND GUAY / AFP) (KEYSTONE/AFP/BERTRAND GUAY)