Chung Ha (청하; or Chungha) is a South Korean singer and dancer under MNH Entertainment. She is a former member of the project girl group I.O.I. She made her solo debut on June 6, 2017, with the mini album Hands on Me. From January to April, she participated in Mnet’s survival television, Produce 101 as a trainee representing MNH Entertainment. She finished the survival in 4th, becoming member of the girl group I.O.I. The group debuted in May 4, with the mini album Chrysalis. After the disbandment of I.O.I, on January 29, MNH announced that she would debut as a solo artist. On April 12, a preview film for her pre-release single titled “Week” was released, and in April 21, the music video. On June 7, she officially debuted with the mini album Hands on Me and its title track, “Why Don’t You Know”. On the same day, she held her showcase.