Where did the saying hard hearted Hannah come from?

The saying "hard-hearted Hannah" originates from the popular song "Hard-Hearted Hannah (The Vamp of Savannah)," written by Milton Ager and Jack Yellen in 1924. The song tells the story of a woman named Hannah, who is portrayed as emotionally cold and unyielding in love, captivating yet indifferent to the affections of others. The phrase has since entered popular culture to describe someone who is emotionally detached or unfeeling.