Oh My Girl

2015: Debut with Oh My Girl and Closer

Oh My Girl was publicized as the new sister group of label-mate group B1A4. On March 29, 2015, teaser images of the eight members were released as well as their concept images. On April 20, the group released their first mini album, Oh My Girl, which included the single "Cupid". They held their debut showcase the same day. They first performed the single on SBS MTV's The Show.

On June 21, the group announced that they were currently preparing a new album. Their second mini album, Closer, was released on October 7. The single of the same name was promoted on music shows.

On December 11, Oh My Girl flew to LA for a photoshoot for their next album jacket and to perform at a special event, but could not get cleared by customs to enter the US. The group's management claimed that customs mistook the girls for underage prostitutes due to props and outfits for their special performance at an event on the Saturday of that week, and that they were detained for 15 hours. However, an official with the U.S. Customs and Border Protection later stated that management was lying about the reason for being denied entry. Upon seeing the contents of the performers' luggage, customs officials determined the group was entering the U.S. to perform, not to go sightseeing as the group had claimed. As the group did not have the required P1 performance visa, they were denied entry. The customs official denied that the group was "detained" for 15 hours, noting that they were put on the first available flight back to Korea on the airline they traveled with.

2016: Pink Ocean, Windy Day, Listen to My Word (A-ing), first concert Summer Fairytale and JinE's indefinite hiatus

Oh My Girl's third EP, Pink Ocean, was released on March 28, 2016 with the title track "Liar Liar", and a pre-released single "Step by Step". On the same day, Oh My Girl announced their official fandom name, "Miracle", at their comeback showcase for Pink Ocean and also on the group's V-app. The group promoted "Liar Liar" and "Step by Step", a B-side written by B1A4's Jinyoung, on their comeback stages and at guerrilla concerts in Hongdae and Sinchon. In the beginning of May, the group promoted "Step by Step" for four days on the music programs M! Countdown, Inkigayo, Music Core and Music Bank.

On May 26, 2016, Pink Ocean was reissued as Windy Day with two new songs: "Windy Day" and "Stupid in Love", along with the Chinese version of "Liar Liar" (which was released in Pink Ocean exclusively on online streaming services in China). On August 1, they released a special summer album containing four remake songs, including Papaya's "Listen to My Word (A-ing)" featuring Skull and Haha.

On August 20 and 21, Oh My Girl held their first solo concert titled Summer Fairytale at the Blue Square Samsung Card Hall in Seoul, South Korea. Tickets were available to purchase on July 22 and were sold out within three minutes, breaking the record for the fastest sold-out concert for a rookie group.

On August 25, WM Entertainment released a statement announcing JinE's temporary break from Oh My Girl's activities due to symptoms of anorexia. The remaining seven members will continue with Oh My Girl's activities while JinE rests and receives treatment with support from WM Entertainment.

2017: April comeback and JinE's continued hiatus

On March 13, WM Entertainment announced on Oh My Girl's fancafe that their next album is scheduled to be released in April. JinE will not be taking part in upcoming album promotions and activities in favor of continued treatment and recovery. WM has also stated that JinE's health has improved since last year, and WM is focusing on long-term treatment for JinE.

Hyojung

Hyojung (Hangul: 효정) was born Choi Hyo-jung (Hangul: 최효정) on (1994-07-28) July 28, 1994 in Anyang, Gyeonggi, South Korea. She is one of the main vocalists and leader of the group. Weeks after Hyojung was born, she and her family moved to Thailand and lived there until she turned six.

In her adolescence, Hyojung was part of the Uiwang choir and participated in children’s singing contests and talent shows performing solos and duets. She joined WM Entertainment after being the winner of WM Entertainment's audition in 2014.

Hyojung took part in her first OST in September 2016, collaborating with Crucial Star to release “When Autumn Comes” for Fantastic.

JinE

JinE (Hangul: 진이) was born Shin Hye-jin (Hangul: 신혜진) on (1995-01-22) January 22, 1995 in Pohang, North Gyeongsang, South Korea. She is one of the sub vocalists for the group.

In her first year of high school, JinE traveled from her hometown in Pohang to Seoul by herself to audition for WM Entertainment. She passed WM Entertainment's audition and was a trainee for four years with Jiho before debuting with Oh My Girl.

In August 2016, JinE took a temporary break from Oh My Girl's activities due to symptoms of anorexia. Since then she has been living with her parents in Pohang, receiving treatment and diligently working on regaining her health. On March 13th, 2017, WM Entertainment posted an annoucement on Oh My Girl's fancafe stating that JinE will not be participating in Oh My Girl's upcoming album in April. She will continue resting while the remaining seven members promote their new album.

Mimi

Mimi (Hangul: 미미) was born Kim Mi-hyun (Hangul: 김미현) on (1995-05-01) May 1, 1995 in Jeju, South Korea. She is the main rapper and one of the main dancers.

Mimi is credited as a lyricist for most of Oh My Girl's songs. Her rap verses are self-composed and her work is most prominent in Oh My Girl's Closer, Pink Ocean and Listen to My Word.

In August 2016, Mimi and YooA joined Seunghee and Ladies' Code in Girl Spirit's military special to perform their cover of Sunmi's "24 Hours" and Apink's "No No No" for 400 South Korean soldiers.

YooA

YooA (Hangul: 유아) was born Yoo Yeon-joo (Hangul: 유연주) on (1995-09-17) September 17, 1995 in Seoul, South Korea. She legally changed her name to Yoo Si-a (Hangul: 유시아). She is the face of the group, one of the lead vocalists and one of the main dancers. She has an older brother named Yoo Junsun (Hangul: 유준선) who is a dancer and instructor at 1MILLION Dance Studio.

In August 2016, YooA appeared on Mnet's Hit the Stage as U-Kwon (Block B)'s dance partner in episodes 3 and 4. The theme of their performance depicts the double life of house pets. YooA and U-Kwon achieved fourth place behind YooA's brother Junsun and his dance partner Hyoyeon. In November 2016, YooA along with GFriend's Eunha, Cosmic Girls's Cheng Xiao, Gugudan's Nayoung, and Momoland's Nancy formed a special project group named "Sunny Girls" for Inkigayo's Music Crush Project. "Sunny Girls" released their track titled "Taxi" produced by Duble Sidekick on November 27. They performed their song as special stages for episodes 891 and 892 of Inkigayo and in the SBS Gayo Daejeon on December 26.

Seunghee

Seunghee (Hangul: 승희) was born Hyun Seung-hee (Hangul: 현승희) on (1996-01-25) January 25, 1996 in Chuncheon, Gangwon, South Korea. She is one of the main vocalist and in charge of highest-range backing vocals of the group.

Before debuting with Oh My Girl, Seunghee was a contestant on Mnet's Superstar K2 in 2010 and played a minor role in Lim Chang-jung's "Open The Door" music video with Laboum's Yulhee. In December 2014, Seunghee was the last member of Oh My Girl to join WM Entertainment.

In July 2016, Seunghee joined JTBC's Girl Spirit, a singing competition reality show aimed at highlighting lesser-known girl group vocalists through themed performances every week. Seunghee's performances on Girl Spirit include a cover of SHINee's "Dream Girl", a rock version of TWICE's "Cheer Up", and a duet with B1A4's Sandeul dedicated to her older sister. Among eleven other contestants, Seunghee achieved second place behind SPICA's Bo-hyung, winning her family a vacation to Saipan.

Jiho

Jiho (Hangul: 지호) was born Kim Ji-ho (Hangul: 김지호) on (1997-04-04) April 4, 1997 in Okcheon, North Chungcheong, South Korea. She is the visual of the group and one of the lead vocalists. Jiho graduated from School of Performing Arts Seoul with Sujeong (Lovelyz), DK (Seventeen), and Eunha & Yuju (GFriend) on February 4, 2016.

Jiho was a trainee with JinE under WM Entertainment for four years before debuting with Oh My Girl. In August 2015, Jiho was the lead female role in B1A4's "Sweet Girl" music video.

Binnie

Binnie (Hangul: 비니) was born Bae Yu-bin (Hangul: 배유빈) on (1997-09-09) September 9, 1997 in Chuncheon, Gangwon, South Korea. She is a sub vocalist for the group.

In elementary school, Binnie studied acting and was cast as a child actress. She made her first appearance in Beethoven Virus and continued acting as a minor role in South Korean dramas such as I Love You, Don't Cry, King of Baking, Kim Takgu, and Sungkyunkwan Scandal. She dreamed of becoming a singer and started practicing at her local youth cultural center by herself. She auditioned for various agencies before finally joining WM Entertainment in high school.

In April 2017, Binnie will appear on KBS2's Viva Ensemble with B1A4's Baro and Younha.

Arin

Arin (Hangul: 아린) was born Choi Ye-won (Hangul: 최예원) on (1999-06-18) June 18, 1999 in Busan, South Korea. She is a sub vocalist and maknae (youngest member) of the group. Arin is currently a sophomore at School of Performing Arts Seoul with Mina (I.O.I, Gugudan), Mark (NCT), and Dayoung (Cosmic Girls).

Growing up in Busan, Arin did not have many opportunities to audition for an agency as compared to the opportunities available in Seoul. She joined a music academy in middle school and auditioned, eventually becoming a trainee after winning WM Entertainment's audition in 2013.

EPs

Repackage

Concert