A former member of the Sonderkommando reported that the song was spontaneously sung by Czech Jews at the entrance to the Auschwitz-Birkenau gas chamber in 1944.
Un antigo membro do Sonderkommando informou que un grupo de xudeus checos comezaron a cantar a canción de xeito espontáneo á entrada da cámara de gas de Auschwitz-Birkenau en 1944.