I was asked about this song when I was based in Hamburg Germany. A colleague have just returned from a holiday in Thailand and was dying to find the title of this song but I was unhelpful. Apparently the song was playing everywhere he was.

Wonder Girls is a Korean girl group from JYP Entertainment formed in 2007.

Wonder Girls had a reality TV series and even a TV movie on Nickelodeon.

The girl group were the first K-pop act to chart on the US Billboard charts with this track. There will soon be many acts after that and K-pop eventually reaching number 1 with BTS.