 Since 1867, Vorobkevych had been a singing instructor in the Chernivtsi Theology Seminary and Lyceum, and in 1868 he took a test for certified singing instructor and choir regent.In 1875, he became a singing instructor at the Theological Department of the Chernivtsi University.During that time, he already worked as a composer creating his own songs, psalms, choir works, operettas, and others.