Lee Hi, the rookie topping every major chart lately, has revealed BTS clips of the music video as well as the jacket photoshoot for her debut single "1,2,3,4".

The singer seemed to be quite fascinated and curious about her first music video shoot as she asked many questions, but also remember to have fun as she goofed around once the cameras were off.

In addition, Yang Hyun Suk also appeared in the making-of clip, watching the process and giving advice to the singer.

Check out the clips below!