His first worldwide hit 'Gangnam Style' became the most watched YouTube video ever with more than 1.5 billion views.<br/> <br />So expectations were high when South Korean rapper launched the dance and video for his follow-up single 'Gentleman' at a packed Seoul concert on Saturday.<br/> <br />Psy's dedicated fans seemed to enjoy the spectacle, including the sight of their hero appearing to fly through the crowd and wearing a skimpy skintight outfit to dance to the Beyonce hit 'Single Ladies."<br/> <br />Mark McKeon travelled from the United States to see the show.<br/> <br />SOUNDBITE, Mark McKeon, fan, saying (English):<br/> <br />"It was really good and it was really funny. It is hard to compare with classic though. I mean "Gangnam Style" is perfect. This one is really good. It is really funny and it is great experience being here at the concert for the release."<br/> <br />The music video for Gentleman is similar in style to that for Gangnam Style, featuring a fast hip-swinging dance by Psy in his trademark sun
