"Most notoriously, on March 13, 1919, a letter purporting to be from the [New Orleans] Axeman was published in the newspapers saying that he would kill again at 15 minutes past midnight on the night of March 19, but would spare the occupants of any place where a jazz band was playing. That night all of New Orleans's dance halls were filled to capacity, and professional and amateur bands played jazz at parties at hundreds of houses around town. There were no murders that night."