I.O.I - Whatta Man (Good man) (2016)
- Members: Somi (0:22), Doyeon (0:28), Jieqiong (0:34), Chungha (0:41), Nayeon (1:16), Yoojung (1:23), Sohye (1:35)
- This sub-unit of I.O.I excludes Sejeong (gugudan), Mina (gugudan), Chaeyeon (DIA), and Yeunjung (Cosmic Girls), all who are currently on hiatus to debut with their respective groups.
- Chungha created the choreography for this song.1
- According to producer Ryan S. Jhun, this concept has “never [been] done before in Korea”.2
