It is a department that cultivates the ability as a "performer," which is the most emphasized in the overall K-POP music industry. This is because the culture of K-POP is not just "listening music," but "viewing music." In other words, "Watching music" simply means singing ability. A short show where dance, fashion, and culture come together beyond the singer you put forward. It means business. I developed my skills as a performer and my expertise. I'll try my best to learn it.