This document discusses the viral success of Psy's "Gangnam Style" music video on YouTube and social media in 2012. It achieved over 200 million views on YouTube by September 2012, which attracted the attention of celebrities who helped spread it further. The document attributes the song's success to factors like the catchy content, social media as a platform for early viral marketing, the existing social media infrastructure strengthened by K-pop, and support from mass media like CNN that helped confirm its popularity to wider audiences. It stresses the importance of cooperation across different fields and cultures, and having a sustainable system combining content, social media, infrastructure, and mass media support.