About Chaeyoung
Son Chae-young, known mononymously as Chaeyoung, is a South Korean singer and rapper. She is a member of the girl group Twice, formed by JYP Entertainment in 2015. Chaeyoung became the first member of the group to receive writing credits when she wrote a rap verse for Twice's version of J. For the group's second Japanese studio album &Twice, on the track "How U Doin'", Chaeyoung took part in composing for the first time, making her the first member to do so.
Biography source: Wikipedia. The profile adds birthday-specific historical context from the Celebs Birthday Today editorial database.