Yes I Love It! We're I.O.I. Nice to meet you!


I.O.I (아이오아이) was an 11-member girl group under YMC Entertainment. They were formed through Mnet's survival reality show Produce 101 and officially debuted on May 4, 2016 with the mini-album Chrysalis and promoted for a year before disbanding at the end of January 2017.


Pre-debut: Produce 101 and "Crush"

In November 2015, Mnet announced their new survival show that would bring together 101 trainees from 46 entertainment companies to form a unit girl group with 11 members chosen by the viewers. The show premiered on January 21, 2016, and the live finale was broadcast in April 1, 2016, with the 11 winners becoming a girl group.

Supposedly, it was also when I.O.I was supposed to debut with "Crush", but Mnet and YMC Entertainment decided to postpone their debut so they can prepare the group with their concept and a new song with new choreography. On April 5, 2016, the song was released as a digital single, followed by its music video.

2016: Chrysalis, "Whatta Man", "Hand in Hand", and Miss Me?

  • Chrysalis promo with Chaeyeon, Sejeong, Somi, and Jieqiong
  • Chrysalis promo with Chungha, Sohye, and Nayoung
  • Chrysalis promo with Yeonjung, Yoojung, Mina, and Doyeon

On April 11, 2016, it was announced that I.O.I would debut with an unnamed mini-album. People speculated that songs like "Crush" and "When the Cherry Blossoms Fade", songs from the finale of Produce 101, would be included in the album. It was revealed that they got over 30 songs from various producers, and that they vote on what the title song of their first album might be, and on which songs will be included in the album as well. On April 27, it was revealed that the title of their first mini-album will be Chrysalis. On May 4, they officially debuted through the release of their first mini-album and music video for title track "Dream Girls". The following day, they held their debut showcase and fan meeting at Jangchung Gymnasium.

Whatta Man Promo

Promo for "Whatta Man"

On May 11, Chaeyeon re-joined her company to promote Spell with DIA. On June 7, Mina and Sejeong re-joined their company to promote Act.1 The Little Mermaid with Gugudan. On June 10, it was revealed that Nayoung, Chungha, Jieqiong, Sohye, Yoojung, Doyeon and Somi will be members of the group's sub-unit. On July 10, it was announced that Yeonjung re-joined her company to promote The Secret with WJSN. After releasing multiple teasers and promos, on August 9, they officially released their single "Whatta Man". The song was produced by Ryan Jhun, composer of "Crush" from their previous album and choreographed by Chungha, the group's main dancer. The song was critically acclaimed, winning multiple music shows. On August 15, the group released the digital single "Hand in Hand" to celebrate the 2016 Summer Olympics.

On August 30, it was announced that I.O.I was preparing for a comeback with the eleven members sometime in October. On September 22, it was revealed that the group’s next song will be produced by Park Jin Young, who's company houses Somi. Park was apparently been preparing a song for the group as a gift. Park would also oversee the group's choreography, outfits, music video and photo shoot. On October 11, the group posted a notice on their social media confirming their comeback, and announcing that their new release will be titled Miss Me?. On October 14, they revealed the title song for the upcoming album to be "Very Very Very", and is actually the fastest song Park made with a bpm of 206. On October 17, after multiple teasers, they released the album, and on the same day, held the showcase at Yes24 Live Hall in Seoul. The song was a critical success, winning multiple music shows and achieving their first ever All-Kill.

On November 27, I.O.I announced their final solo concert titled Time Slip – I.O.I from January 20 to 22, 2017. The concert was announced to be held in Jangchung Gymnasium, where the group held their debut showcase. On December 21, it was reported that the group's sub-unit would be releasing a digital single in January 2017 with no promotions on music shows.

2017: "Downpour" and disbandment

I.O.I Downpour cover art

Album cover for "Downpour"

On January 10, it was revealed that the group had received various songs from various producers and songwriters as potential songs for their final release as a group. According to several sources in the music industry, I.O.I had finished recording three songs, one of the songs was written by B1A4 Jinyoung, who also composed "When the Cherry Blossoms Fade" for their debut album. The members of I.O.I had to choose just one song for their final release. Finally, on January 17, the group released their final single "Downpour", that was produced and penned by SEVENTEEN Woozi, who is also Nayoung and Jieqiong's labelmate. The ballad was personally chosen by the members as their final release, in the hopes that their fans can reminisce while listening to this “present.” The song topped multiple charts, eventually receiving an All-Kill.

On January 19, the group attended the 26th Seoul Music Awards, and performed, which was their last official stage performance. On January 20 to 22, they held their final solo concert Time Slip – I.O.I, and the band officially disbanded on January 29, with the members' last television show appearance on MBC's Section TV and the fan cafe closing down on the 31st.


Place Name Position
10 Nayoung (나영) Leader, Main Rapper
4 Chungha (청하) Main Dancer, Lead Vocalist
2 Sejeong (세정) Main Vocalist
7 Chaeyeon (채연) Sub Vocalist, Visual
6 Jieqiong (洁琼) Lead Dancer, Sub Vocalist, Visual
5 Sohye (소혜) Sub Vocalist
11 Yeonjung (연정) Main Vocalist
3 Yoojung (유정) Lead Rapper, Lead Vocalist, Lead Dancer
9 Mina (미나) Lead Dancer, Lead Rapper, Sub Vocalist
8 Doyeon (도연) Sub Vocalist
1 Somi (소미) Center, Maknae, Lead Vocalist, Face of the Group


Mini albums

Single albums

Digital singles




  • Asia Model Awards- New Star Award (2016)
  • Mnet Asian Music Awards- Best New Artist (Female Group) (2016)
  • Simply K-Pop Awards- Best Rising Star (Girl Group) (2016)
  • Golden Disk Awards- Rookie Artist of the Year (2017)
  • Seoul Music Awards- New Artist Award (2017)
Year Music Show Song Date
2016 The Show "Whatta Man" August 16

August 30

2016 Show Champion "Whatta Man" August 17
"Very Very Very" October 26
2016 M! Countdown "Whatta Man" August 18
"Very Very Very" October 27
2016 Music Bank "Whatta Man" August 19
2016 Inkigayo "Very Very Very" August 30
2017 "Downpour" January 29


  • They are the first overall K-Pop group and girl group to debut with 11 members.




Official links