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.
Simplicius (operetta) Simplicius is an operetta by Johann Strauss II. It was conceived from the work of HJC von Grimmelhausen titled "Der abenteuerliche Simplicissimus" or simply "Adventurous Simplicissimus", which was opined by many to be the 17th century's greatest German novel. The libretto for this work was furnished by Victor Léon who was one of Vienna's promising talents of that era, with music by Johann Strauss II.