Oskar Czerwenka was an Austrian operatic bass and academic teacher. He was a member of the Vienna State Opera from 1951 to 1986, performing 75 roles, including his signature role Ochs auf Lerchenau and premieres of new operas. He was also an author, visual artist and illustrator, and performed in concert. He received several awards, and the state music school in his home town was named after him.

Irische Legende is a 1955 opera by Werner Egk who also wrote the libretto after the 1892/1899 verse drama The Countess Cathleen by W. B. Yeats. It premiered at the Salzburg Festival on 17 August 1955.