Question: What is the genre of music that the nine member group containing Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu called?
Sentence (from "Chou Tzu-yu"): Chou Tzu-yu (born June 14, 1999), known as Tzuyu, is a Taiwanese singer based in South Korea and a member of the K-pop girl group Twice, under JYP Entertainment.
Relevant evidence: Yes