What genre are both Euridice and Der Kaiser von Atlantis?
Der Kaiser von Atlantis Der Kaiser von Atlantis oder Die Tod-Verweigerung ("The Emperor of Atlantis or The Disobedience of Death") is a one-act opera by Viktor Ullmann with a libretto by Peter Kien. They collaborated on the work while interned in the Nazi concentration camp of Theresienstadt (Terezín) around 1943. The Nazis did not allow it to be performed there.
Phaedra (opera) Phaedra is a 'concert opera' in two-acts by Hans Werner Henze. Its first performance was given at the Berlin State Opera on 6 September 2007. The work is a co-commission and co-production with the Berliner Festspiele, Théâtre de la Monnaie, Brussels, Alte Oper Frankfurt and the Vienna Festival.