'World star' Psy's "Gangnam Style" has spread to Indonesia.

On September 10, a video titled, 'Gangnam Style Flashmob Jakarta' was posted on YouTube.

The video explained, "This is an illegal flash mob. We were safely able to bring all 1,000 people to the Jakarta landmark called 'Bundaran HI."

The video starts with 5 people turning on the music from huge speakers. Then slowly, all 1,000 members of the mob began to join in on the dance.

Also, the parts, "sexy lady" and "O, o, o, Oppan Gangnam Style" was sung along by all the members of the mob.

Although there have been many other parodies and flash mobs for "Gangnam Style," there has never been one this big.

On the other hand, Psy will be performing in Las Vegas at the 'iHeartRadio Music' festival at the end of September.