Twice (Hangul: 트와이스; Japanese: トゥワイス) is a South Korean girl group formed by JYP Entertainment through the 2015 reality show Sixteen. The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu. The group debuted on October 20, 2015, with the extended play (EP) The Story Begins.

Black Pink (Hangul: 블랙핑크), stylized as BLACKPINK or BLΛƆKPIИK, is a South Korean girl group formed by YG Entertainment, consisting of members Jisoo, Jennie, Lisa, and Rosé.

EXID (/iː ˈɛks aɪ ˈdiː/; Hangul: 이엑스아이디; short for "Exceed in Dreaming"), is a South Korean girl group formed in 2012. The group currently consists of five members: Solji, LE, Hani, Hyelin and Jeonghwa. EXID debuted in February 2012, with the single "Whoz That Girl". Though the album gained some attention, it was not until 2014 that the group unexpectedly gained popularity with the single "Up & Down", which reached number one on the Gaon Singles Chart four months after release due to a fan-recording of a live performance becoming a viral video. EXID released their second EP Ah Yeah in April 2015, to commercial success. They followed this with their first studio album Street (2016) and the EPs Eclipse and Full Moon (2017).