Gangnam Style was released by South Korean artist PSY in 2012 and became the first video to pass one billion views on YouTube, turning its horse-riding dance into a worldwide phenomenon. The song's opening quickly became shorthand for the whole track in short-form videos, reaction clips and dance edits, even long after its chart peak. Its instantly recognisable beat still signals playful confidence and retro internet nostalgia, which is why creators keep returning to the intro for quick, high-energy moments.