TWICE is a South Korean girl group formed by JYP Entertainment through the 2015 reality show Sixteen. The group consists of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu.

TWICE rose to fame in 2016 with their single "Cheer Up". The song charted at number 1 on the Gaon Digital Chart and became the best-performing single of the year. The group debuted in Japan on June 28, 2017, with the release of their first compilation album titled #Twice. The album debuted at number 2 on the Oricon Albums Chart, which sold 136,157 copies within seven days.

Within 19 months of debut, Twice has sold more than 1.2 million units of their four EPs and special album. The music video for TWICE's Halloween-themed 2016 hit "TT" has now reached more than 400 million views on YouTube.