The Felszabadulás dala ( [ɒ ˈfɛlsɒbɒdulaːʒ ˈdɒlɒ] ; 'Song of Liberation') is a communist Hungarian patriotic song. It was first created during Rákosi Mátyás's rule in order to celebrate Liberation Day on April 4 when the Soviet Red Army drove the Nazis away from Hungarian territory in 1950. It was written and composed by Hungarian musician Ernő Rossa (1909–72).