"Glück, das mir verblieb" (German for "Happiness that remained") is a duet from the 1920 opera Die tote Stadt (The Dead City) composed by Erich Wolfgang Korngold to a libretto by his father Julius Korngold.
At the start of act 1, Paul confides in a friend the extraordinary news that he has seen Marie, or her double, in the town and that he has invited her to the house.
Their voices combine in the verse which extols the power of love to remain constant in a fleeting world.
Abend sinkt im Ha(a)g— bist mir Licht und Tag.
Naht auch Sorge trüb, rück zu mir, mein treues Lieb.
Mußt du einmal von mir gehn, glaub, es gibt ein Auferstehn.