Nicole Jung

Kara debuted on March 29, 2007 with "Break It" on M! Countdown as a 4-member group. Jung was one of the four along with Park Gyuri, Han Seungyeon, and Kim Sunghee. Kara was often compared to Fin.K.L because of their concept and the fact that they are from the same company (DSP Entertainment). In March 2008, Sunghee left the group due to parental pressure. Sunghee had failed her college exams. On July 24, 2008, Kara came back with two new members, Goo Hara and Kang Jiyoung. Their new concept was "cute" and "playful".

On December 4, 2008, Kara released their 2nd mini-album "Pretty Girl" and had their comeback starting on M! Countdown with "Pretty Girl". In February 2009, Kara followed up with their album "Honey". "Honey" became the group's first #1 single when it topped the M! Countdown and The Music Trend.[10]

In late July 2009, Kara revealed their second album named "Revolution".[11] Due to the popularity of the songs, Wanna and Mister, Kara's overall popularity increased. Kara currently started promotions with their third mini-album "Lupin".[12] Lupin was a success, it won KBS Music Bank K-Chart on March 12, March 19, and March 26, 2010.

In August 2010, Kara officially debuted in Japan with "Mister". After this, Kara released their fourth mini-album Jumping in November 2010.

On January 19, 2011, Kang Jiyoung, Han Seung-yeon and Jung announced that they were terminating their contract with DSP. On April 28, 2011, the dispute between DSP Entertainment and Kara's 3 members was officially announced as resolved.

Jung injured her ankle during Kara's first stand-alone concert in Korea, which was held on February 18, 2012. She was performing a solo performance cover of Michael Jackson's "Beat It", when she hurt her ankle while leaving through a lift.[13][14] After she got hurt, she did limp a little during performances but she still finished the concert. Afterwards in the dressing room, she received acupuncture for her injury. Despite her injury, she still performed on the very next day. Afterwards, Jung's injury was publicly revealed as she was photographed at airports in a wheelchair.[15] Despite her injury, Nicole still hosted SBS "Inkigayo" with a cast on her leg. Due to the ankle injury, she was unable to perform in group performance choreography during their Speed Up promotion in Japan from March to April 2012.

Kara has released Kara Collection in 2012, both in South Korea and Japan, an album containing each of the girls' solo songs. Jung's song was "Lost", which featured close friend Jinwoon.

Jung performed with the group for the last time at the 2013 MBC Gayo Daejejeon on December 31, 2013. The group performed a medley of their past hit singles along with "Damaged Lady", from the group's fourth album Full Bloom.[16]

On January 13, 2014, it was announced that Jung would be withdrawing from the group due to the expiration of her contract with DSP Media,[17] and that she would be flying to the States for two months to focus on improving her vocal and dance skills while preparing to make a solo debut.

On October 14, 2014, Jung signed an exclusive contract with B2M Entertainment. The agency revealed, "Following the end of her contract with DSP Media, Nicole is currently preparing for her solo debut after confirming a new agency and completing the contract signing. Nicole's new agency was established by CEO Gil Jong Hwa, who had been with KARA from their debut to their peak. Since their connection under DSP Media, they have maintained close relations with one another."[18]

Jung's solo debut mini album, First Romance was released on November 19, 2014 and the title song MAMA, which was used to promote the mini album. First Romance in November sold 8,754 copies. By the end of 2014, the mini album had sold 10,137 copies.[19]

On April 22, 2015, it was revealed that Jung would debut in Japan on June 24.[20] She performed her debut song before release at the 'KCON 2015 Japan X M! Chttp://series-top.com/new-showsountdown'. On June 17, she released a short PV of her debut single "Something Special".[21] On June 24, Jung released the PV for "Something Special"

In December 2015, Jung released news that she would be coming back in Japan with her second Japanese single in 2016. It was revealed that the single would be called "Don't Stop" to be released on February 17. On January 16, she released a short PV version of "Don't Stop"[22]

On March 2, 2016, Jung revealed on her Instagram that she would be releasing her first solo Japanese album, titled Bliss on April 27, 2016.[23] The title track from the album is titled "HAPPY", the PV teaser was released on March 31, 2016.[24] She had her first solo concerts titled "2016 Nicole The 1st Live" spanning two days, April 29, 2016 and May 1, 2016.

Jung was featured on former DSP Media artist Sunha's first album Fahrenheit in the song "String" (2008). In April 2009, she sang a duet with former Noel member Kang Kyun-seong called "Happy And".[25] In August 2009, she and singer Jay Park became part of historical culture variety show Nodaji, replacing Choi Min-yong and Kim Tae-hyun. But the show was cancelled due to low ratings in October 2009.

In September 2009, Jung was featured in numerous live performances of Mighty Mouth's single "Love Class".[26] In July 2010, she sang a duet with Park Myung Soo for his single "Whale" (고래).[27]

Jung was a member of "Dazzling Red", one of the idol project groups for the 2012 SBS Korean Music Festival – The Color of K-Pop concert with fellow idols After School's Nana, 4Minute's Hyuna, Secret's Hyoseong, and SISTAR's Hyorin.[28] Dazzling Red released a single, "This Person", in December 2012.[29]

Jung was invited to the 2013 MTV Video Music Awards Japan (as the only Korean artist invited that year) on June 22, 2013 and performed her solo song "Lost" from Kara Collection.[30]