It is heard in a BBC recording from April 20, 1945 of Jewish survivors of the Bergen-Belsen concentration camp five days after their liberation. This was the first Sabbath ceremony openly conducted on German soil since the beginning of the war, with people still dying around them, singing what would become the Israeli national anthem, Hatikvah. At the end of Hatikvah, British Army Chaplain Leslie Hardman shouts out, "Am Yisrael Chai, The children of Israel still liveth!"(Wikipedia)