Singer IU uploaded a photo on the 5th on her twitter saying "Fiesta music video shoot. Cheska is always cute. Everyone is so pretty."

In the photo, IU is holding Checka's sign, who's a member of a rookie girl group, Fiesta. IU attracted the viewer's attention with her face smaller that A4 paper. Cheska next to IU is posing as if she is singing with the marker in her hand.

On the other hand, Cheska is a member of rooke girl group, Fiesta. Fiesta released a song "Moonlight Ocean" with IU past 26th.