Secret – South Korean k-pop band
Secret was formed in Seoul in 2009. Its lineup included Jung Ha-na, Han Sunhwa, Song Jieun, and Jun Hyoseong. The idea to create a band belonged to the successful South Korean label, TS Entertainment. In order to promote the group, the company funded a documentary, Secret Story, which talked about each girl and her story on the way to fame.
The group officially debuted in October 2009 with the single "I Want You Back", which managed to climb to the 27th spot of the local chart. It was a significant achievement for a debuting group. To promote the band, the label suggested that the artists participate in the show M! Countdown. A little later, they performed their single “Friends” on another TV show Master of Study OST.
In April 2010, the group released its first EP, Secret Time. The album reached the 4th spot of South Korea Gaon Album Chart. The songs "My Boy", "Do As You Please", "I Want You Back", "Spotlight", "3 Years, 6 Months” and "Magic" became popular. In fact, the latter turned into a huge hit. It sold over 2.2 million copies in South Korea. At that time, many organizers tried to book Secret for private events in order to hear the single performed live.