Choi Seo-ah (; born 3 September 1993), better known by her stage name Juniel () is a South Korean singer-songwriter. She began her career in Japan in 2011 before debuting in South Korea in 2012. In addition to her output as a solo artist, Juniel has released music as a member of the duos Romantic J (with Lee Jong-hyun), and Poetic Narrator (with Doko).
On 22 May, Juniel released her first Korean song, a duet with Jung Yong-hwa, titled "Fool" (). On 7 June, she released her debut Korean EP, My First June, which includes the lead single "Illa Illa" (). Her self-composed songs, which were previously released in Japan, were also included on the EP. "Illa Illa" was later chosen as the theme song for the character Im Mae-ari, played by Yoon Jin-yi, in the Korean drama series A Gentleman's Dignity. Juniel made a cameo appearance on the series as a street performer in Hongdae.
Juniel's second EP, 1&1, was released on 20 November 2012. 1&1 peaked at number four on the Gaon Album Chart, selling a total of 3,097 copies. The music video for its lead single, "Bad Man", was released on the same day, peaking at number four on both the Gaon and Billboard Korea K-Pop Hot 100 charts. Other songs included on the album are Korean remakes of "Boy", "Oh Happy Day", "Cat Day" and a new song co-written and co-composed by Juniel titled, "Happy Ending".
A month later, her third extended play titled Fall in L released on 25 April 2013. The EP is composed of four songs: the lead track "Gwiyeoun Namja" (귀여운 남자; "Pretty Boy"), "Date" (데이트), "Jamkkodae" (잠꼬대; "Sleep Talking") and "My Lips". On the same day of its release, "Gwiyeoun Namja" topped several Korean real-time music charts. On 2 May 2013, Juniel was appointed honorary ambassador for teenagers at the 2013 Teenage Family Month Ceremony.
On 18 July, Juniel released a digital single titled "Love You More Than Ever" featuring Hanhae from PHANTOM as a part of producer Kim Do Hoon's 'DOKKUN PROJECT'. The song immediately topped the online Korean music charts such as Bugs, Soribada & Naver Music after its release.
On 9 December, Juniel and CNBLUE's Lee Jong-hyun formed a duet and released a winter special digital album called 'Romantic J' with the song titled "Love Falls". The song was inspired by the movie "Music and Lyrics", where Lee Jong-hyun is the music composer and Juniel is the lyricist.
In April 2015, Juniel collaborated with Teen Top's Ahn Daniel for release a duet called "Spring Love". Niel & Juniel had their debut stage on Mnet's M! Countdown on 16 April 2015.
On 21 August, Juniel made a comeback with her second digital single "Sorry" on Music Bank.
In 2020, she formed the duo Poetic Narrator with musician/producer Doko, and announced that she would be going by her given name, Seo Ah. They released their mini-album, Poetic License on 23 January.
On 28 December 2021, C9 Entertainment announced that Juniel would not be renewing her contract.
On June 11, 2022, Juniel signs a contract with K Tigers Entertainment.
| 2010 | Japan Niji Iro Supernova | Winner | |
| 2012 | Cyworld Digital Music Awards | Rookie of the Month (June) ("Fool") Cyworld Digital Music Awards – Rookie Of The Month (June) Cyworld. Retrieved 4 July 2012. | |
| 14th Mnet Asian Music Awards | Artist of the Year | ||
| Best New Female Artist | |||
| 19th Korean Entertainment Arts Awards | Rookie Singer Award 대한민국 연예예술상 오늘(28일) 개최, '힐링캠프' 최우수프로그램 선정 Nate. Retrieved 28 November 2012. | ||
| 4th Melon Music Awards | Rookie Award | ||
| T-Store Best Song Award ("illa illa") | |||
| The 27th Golden Disk Awards | Digital Bonsang ("illa illa") | ||
| Popularity Award | |||
| New Rising Star Award | |||
| The 22nd High1 Seoul Music Awards | Rookie Award | ||
| Popularity Award |
| + Television ! Year ! Title ! Role ! class="unsortable" | Notes | ||
| 2012 | A Gentleman's Dignity | Street performer | Episode 13 Cameo appearance |
| 2013/14 | Cheongdam-dong 111 | herself | reality show |
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