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Twice is a South Korean girl group formed by JYP Entertainment. The group consists of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu. They are recognized as one of the best-selling girl groups of all time and are considered one of K-pop's most influential acts. The group has been referred to as "The Nation's Girl Group" in South Korea and has played a role in the resurgence of girl groups within the Korean Wave. Twice was formed through the television program Sixteen in 2015 and debuted on October 20 of that year with the extended play The Story Begins. They gained domestic fame in 2016 with their single "Cheer Up," which reached number one on the Gaon Digital Chart, was the best-performing single of the year, and received awards at the Melon Music Awards and Mnet Asian Music Awards. Their subsequent single, "TT," from the EP Twicecoaster: Lane 1, topped the Gaon charts for four consecutive weeks.