Kozak, Serhii [Козак, Сергій], b 14 March 1921 in Kryvyn near Slavuta, Volhynia gubernia, d 18 February 1993 in Kyiv. Baritone opera singer and composer. Upon graduating from the Moscow Conservatory in 1950, he joined the Kyiv Theater of Opera and Ballet as a soloist. His repertoire consisted of over 60 roles, including Ostap in Mykola Lysenko’s Taras Bulba, the title roles in Kostiantyn Dankevych’s Bohdan Khmelnytsky and Peter Tchaikovsky’s Eugene Onegin, Martyn in Heorhii Maiboroda’s Mylana and Horbenko in his Arsenal, and Telramund in Richard Wagner’s Lohengrin. He composed numerous art songs and works of choral music, and wrote books on Mykhailo Hryshko and Hryhorii Verovka.

[This article originally appeared in the Encyclopedia of Ukraine, vol. 2 (1988).]