The Portuguese entrant in this new edition of the festival was another former Eurovision contestant , in this case Simone de Oliveira , who had previously represented Portugal in the Eurovision Song Contest back in 1969 . In this edition of the OTI Festival , Oliveira performed the song “ A tua espera ” ( Your wait ) which received a mild welcome
Eurovision Song Contest back in 1969
Eurovision Song Contest 1969
OTI Festival 1980