The melody comes from the closing moments of the 1970s television series The Incredible Hulk, where David Banner, played by Bill Bixby, walks alone down a road after each adventure. Composer Joe Harnell wrote the quiet piano theme to underline that lonely departure. Decades later, the tune travelled through television reruns and online video into meme culture, where Spanish-speaking creators in particular adopted it as a musical cue for a sad or disappointing anecdote. Its instant recognisability keeps it useful for a quick emotional punchline.