"Eithne" is one of the best pieces of its kind and would certainly deserve a modern revival. The composer's background in church music led to a number of works in this area, too, including "Benediction Music" (c.1924) and some works in the Irish-language collection of religious songs, "Dánta Dé" (1928), of which O'Dwyer was one of the editors. His second opera was a one-act piece called "Cleopatra" (1929) that was not successful. He also wrote a number of choral works, mostly arrangements of folksongs. Operas  Instrumental  Choral  Songs