Byt Svetem Vladla (Even Though a Power Dominates) is a song composed for one of the girls' barracks in the Theresienstadt Concentration Camp during the Holocaust. Its intent was two-fold: first, when the girls were being moved about in a group outside the barracks it was sung on lai, lai, lai to keep the girls together and to identify them as belonging to a certain barracks; second, the text consisted of virulently anti-Nazi lyrics that could be sung in the barracks to keep hope alive when the girls were alone.