In 1919, an axeman serial killer in New Orleans stated he would kill again but would spare the occupants of any place where a jazz band was playing. On that night, all dance halls reached capacity and amateur bands played jazz at hundreds of house parties. There were no murders. Between 1918 and 1919, New Orleans was gripped by fear due to a series of gruesome murders attributed to an unidentified assailant known as the "Axeman of New Orleans." The killer targeted mostly Italian-American grocers and their families, using an axe to carry out the brutal attacks. In a bizarre twist, the Axeman sent a letter to a local newspaper claiming he would spare anyone playing jazz music in their homes on a particular night. In response, the city erupted with jazz music as people sought to protect themselves from the killer's wrath. Remarkably, no murders occurred on the night of March 19, 1919, leading to speculation about the killer's motives and the power of music to deter violence. Despite intense investigations, the Axeman was never apprehended, leaving behind a chilling legacy of unsolved murders and unanswered questions in the annals of American crime history.