Loona (stylized in all caps or as LOOΠΔ; Korean: 이달의 소녀; RR: Idarui Sonyeo; Japanese: 今月の少女, romanized: Kongetsu no Shōjo, lit. 'Girl of the Month') is a South Korean twelve-member girl group formed by Blockberry Creative. They were introduced to the public through a pre-debut project that began in October 2016, where each of the members was revealed in a periodic fashion by releasing a promotional single over the following 18 months. Read more on Last.fm