There were quite a few people around, but Ji-seong and Joo-hyuk just nodded their heads in greeting to the two groups and didn't say much. The entire exit area seemed rather quiet. Amidst the loud AOA song "Heart Attack" echoing from outside, only a few pairs of eyes met occasionally.,But on stage, singing ability is only one part, and not the most important. All the factors are just there to serve the overall stage effect.,Wow, as expected of a female idol. Her performance skills seem to come naturally. As soon as she's on stage and in front of the camera, she puts her best foot forward and gives it her all.。