Watch Fmovies. "Yenufa" is an outstanding phenomenon in the music of the 20th century. Drawing on Moravian folklore, Janáček faithfully and deeply conveyed the drama of a peasant girl. The composer followed the path of Mussorgsky, revealing the spiritual life of people through the recreation of intonations of living speech. The libretto is based on a drama written in a naturalistic manner. Free from naturalism, Janáček's music has powerful emotional strength and psychological truth. It was written during a difficult period in the composer's life (illness and death of his daughter).