The melody comes from Frédéric Chopin's Piano Sonata No. 2, written in 1839, whose third movement became known worldwide simply as the Funeral March. Its heavy, plodding rhythm made it a standard at real funerals and, later, a cartoon shorthand for death and doom in films, shows and games. Online, remixed versions tightened the loop and added a beat, turning a classical mourning piece into a meme cue. Creators still reach for it because almost everyone recognises those first notes instantly, even without knowing the composer.