On October 4th, Psy held his free concert in front of more than 70,000 people at Seoul Plaza.

Psy had previously promised that he would provide perform shirtless if he reached #1 on Billboard's "Hot 100".

Although he didn't reach #1, shortly after the live stream went off-air, he took off his shirt and performed an encore performance of "Gangnam Style".

Check out a few pictures below.

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[Images credited as tagged.]