In June 2009, Mnet Media announced that Jiae and Jiwon would be leaving T-ara due to differences in music style. Entertainment who was supposed to be the leader of Girls' Generation, Their first performance was on Mnet's M Countdown music show on July 30, where they performed "Geojitmal" (거짓말, "Lies") and "Norabollae? It was released on September 15, 2009, and became both groups' first number one song as it topped many of the online charts.
The first new member to be added to the group was Boram, the daughter of singer Jeon Young-rok and actress Lee Mi-young. In order to determine the album's title track, Core Contents Media held a survey in which the public had to choose between "Bo Peep Bo Peep" or "Cheoeum Cheoreom" (처음처럼, "Like the First Time").
The reason given was that with so many solo projects, they would be able to have a more complete lineup for T-ARA when individual members were filming or doing other appearances.
They also stated that it would allow the members to undertake more solo activities, and would give them all some relief from their heavy schedules.
The two lead singles, "Neo Ttaemune Michyeo" (너 때문에 미쳐; "I Go Crazy Because of You") and "Naega Neomu Apa" (내가 너무 아파, "I'm Really Hurt"), were digitally released on February 23, 2010, and peaked at number one and number thirty-one on the Gaon chart, respectively.
T-ara held their comeback performance on the same day on M Countdown, and won several music awards for "Neo Ttaemune Michyeo" over the course of their promotions: two consecutive Mutizen wins on Inkigayo After promotions for "Neo Ttaemune Michyeo" ended, T-ara performed "Naega Neomu Apa" on music shows until early April 2010.
) is a South Korean girl group formed in 2009 by MBK Entertainment (formerly known as Core Contents Media).
Later in January 2010, the group announced promotions for their follow up single, "Cheoeum Cheoreom", which ended quickly as Soyeon was diagnosed with H1N1.
In February 2010, the group announced a re-release of their debut album under the title Breaking Heart.
T-ara's late-2011 Korean release Black Eyes spawned three back-to-back number ones: "Cry Cry", "We Were in Love" and "Lovey-Dovey".
In 2012, accusations of internal discord resulted in member departures and a dip in domestic popularity for T-ara.
The group's later material, both Korean and Japanese, was released to varying degrees of success before the group began focusing on promotional activities in China.