What is "flammen"

Flammen (Flames) is a one-act opera by Franz Schreker, on a libretto by Dora Leen, pseudonym of Dora Pollak (b. 23 October 1880, d. Auschwitz c.1942).

Flammen (Flames) is an opera in two acts and ten scenes composed by Erwin Schulhoff, his only opera. The original libretto in Czech was written by Karel Josef Beneš. The opera had its world premiere at the old National Theatre (Národní Divadlo na Veveří) in Brno on 27 January 1932 in Czech under the title Plameny. It was not heard again until the mid-1990s, when it was performed in its German translation by Max Brod as Flammen. Its story is a surrealist retelling of the Don Juan legend with elements from the legend of the Wandering Jew, and heavily influenced by Freudian psychology. Unlike the title character in Mozart's Don Giovanni based on the same legend, Don Juan is not punished by being dragged down to Hell, but instead is condemned to live forever.