Holy GangNam Style...Psy dance with 100,000 fans!

Holy GangNam Style...

On October 4, at 10 p.m., international singer Psy headed to the center of Seoul and effectively drove a crowd of around 100,000 people psycho.

The free concert, which was announced only days before, cost the city a reported 400 million won (~359,000 USD) - but was clearly worth it, as the city gathered like it hadn′t since the 2002 World Cup.

The video said theres 80,000 people there but it's actually 100,000 people.