 The choir remains a symbol of community unification, although only 20% of the choir members are actually Jewish due to the dwindling Jewish population in the country (in World War II, half of the Jewish population of Serbia was killed).By 1912, the Jewish community of Kingdom of Serbia stood at 5,000.Serbian-Jewish relations reached a high degree of cooperation during World War I, when Jews and Serbs fought side by side against the Central Powers.