She later rose to fame after a video of her appearance on Mnet’s mystery singing show I Can See Your Voice, where she performed Ariana Grande’s “Problem,” went viral.

[4] The song garnered attention from media due to the involvement of Norwegian production team ELEMENT, whose resume includes CeeLo Green, Musiq Soulchild, and Madcon.

[6] On October 13, 2017 KST, Playback's agency Coridel Entertainment, released a statement through the group's official fan cafe to confirm that the members will be joining YG's survival show, Mix Nine.

The members of the group are preparing and working hard to show their best and are aiming to release an album mid-October so please stay tuned and continue to support the girls.

[8][9] On June 11, 2020, O& Entertainment announced that Hayoung had signed on with the agency after leaving Management Nangnam and will now be using the stage name Han Na Young.