Question: What nationality is the performer of song So Geht Das Jede Nacht?
Sentence (from "So geht das jede Nacht"): "So geht das jede Nacht" (English translation: "That's How It Is Every Night") was the second German entry in the Eurovision Song Contest 1956 (the rules of that Contest allowed two entries per country, the only time that this was the case), performed in German by Freddy Quinn.
Relevant evidence: Yes