South Korean pop girl band Girl's Generation. [File photo]

This is serious business and some people have already been practicing. Seoul city has 30 percent of foreign tourists who are visiting because they want to ride that wave, according to media reports on Tuesday.

If the first mention of "K-Pop," or Korean pop music, brings up memories of PSY's dance video, you should know that Gangnam Style is three years ago.

Now, the most popular hit boy band is Exo and girl band Girls' Generation. If you want to master their dance moves, come to the place where the stars rehearse and learn from a real K-pop dance instructor.

Seoul city government has partnered with the Korean entertainment companies to promote such dance classes in the hope the city will lure more foreigners.

K-Pop, TV dramas and the food are all part of the "hallyu" wave of pop culture that is sweeping across the globe.

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