I.O.I (Hangul: 아이오아이; Katakana: アイオーアイ; Also as Ideal of Idol') is an eleven-member project girl group under Swing Entertainment. Formed through Mnet's survival reality show PRODUCE 101, they debuted on May 4, 2016 with the mini album "Chrysalis". They promoted for a year before disbanding on January 29, 2017. The final lineup consists of: JEON SOMI (전소미), KIMSEJEONG (김세정), YOOJUNG (유정), CHUNG HA (청하), SOHYE (김소혜) Read more on Last.fm