The sisters' popularity was such that after the war they discovered that some of their records had actually been smuggled into Germany after the labels had been changed to read "Hitler's Marching Songs". Their recording of "Bei Mir Bist Du Schön" became a favorite of the Nazis, until it was discovered that the song's composers were of Jewish descent. Still, it did not stop concentration camp inmates from secretly singing it, this being most likely since the song was originally a Yiddish song "Bei Mir Bistu Shein", and had been popularized within the Jewish community before it was recorded as a more successful "cover" version by the Andrews sisters.