`` Gangnam Style '' became the most watched YouTube video of all time , overtaking Justin Bieber . The song was written by South Korean rapper Psy, who also performed it on his 2013 album'( ) and is now a global superstar. Advertisers , campaigners and sometimes hapless individuals ' videos have also gone viral .
`` Gangnam Style '' became the most watched YouTube video of all time , overtaking Justin Bieber . The rap -- named after a neighborhood of Seoul -- spawned countless parodies . Advertisers , campaigners and sometimes hapless individuals ' videos have also gone viral .