Psy surprises the audience with a 5 song medley that included songs such as, "Red Sunset", "Sweet Kitty", "Go on Vacation" and others.

The fans sang along in unison with him as he ran up and down the stage, putting his hands to his ears.

The city dispatched police squads for the occasion where now approximately 80,000 fans showed up. Public transportation is scheduled to extend its running hours to 2AM in order to create a safe and convenient concert experience for Psy's fans.

KpopStarz is covering the concert live with real time articles and videos, which will all be released via Psysworld.com.

Psy's Passionate Performance with 80,000 Fans at Seoul City Hall [PHOTOS]

Psysworld.com was launched last week as a part of KpopStarz's effort to specifically cover news of Psy and his performances. Psysworld.com also provides an organized section dedicated to parody videos created by Psy's fans as well as a section for celebrity comments regarding Psy.

Go to watch video now -> [Click]