How many members does the band who released the extended play (EP) Signal consist of?
Signal (EP): Signal is the fourth extended play (EP) by South Korean girl group Twice. Twice (band):  The group is composed of nine members: Nayeon, Jeongyeon, Momo, Sana, Jihyo, Mina, Dahyun, Chaeyoung, and Tzuyu.
nine