"This is too similar to Gangnam Style but far less fun. I think I'll wait until I see how good the music video is," wrote micro-blogger @dark_serika.

It was the video of Gangnam Style, and in particular Psy's signature horse-riding dance, that pushed him to global stardom last year after it turned into a viral sensation.

A satire on the luxury lifestyle of Seoul's upscale Gangnam district, it has become the most-watched online video of all time, registering billions of views since it debuted last July.

The song topped charts around the world and inspired a horde of online tributes and parodies, as well as flash mobs of thousands of dancing fans in cities such as Paris and Milan.

Psy has promised a "Psy style" take on a traditional Korean dance for the new video.

"The dance is one known to all Koreans but new to foreigners. This will be presented in Psy style," he told a South Korean TV news program earlier this month.

Gangnam Style was always going to be a hard act to follow, and some Psy fans on Friday were urging patience.

"People complaining about the song need to relax," flyingkirby posted on the website allkpop.com. "This is the result of getting lucky, and then having the entire world put pressure on you to do the impossible."

Already an established artist in South Korea with six albums under his belt, Psy has been building and polishing his own style of quirky, explosive music and flamboyant stage persona since his debut in 2001.

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