Boy band Bangtan Boys, also known as BTS, released a promotional song for Seoul titled "With Seoul" on Wednesday.
The boys are serving as the capital's tourism ambassadors.
The Seoul Metropolitan Government made the track available for free on the city's tourism website (www.visitseoul.net).
Immediately after the music was uploaded, the site drew huge traffic to the point of going down for a while, proving the global popularity of the band at the moment.
The lyrics carry a message of Seoul being a warm, friendly and enjoyable city.
The music video, which features the city's attractions like Mt. Nam, the Cheonggye Stream and the Han River Park, will also be released on Seoul's YouTube account next Wednesday.
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