[人氣歌謠] Secret - I'm In Love

常見問題：

問：1. Q: What is Secret?
答： A: Secret is a South Korean girl group formed by TS Entertainment in 2009.

問：2. Q: How many members are there in Secret?
答： A: Secret originally had five members, but now consists of only four members after Song Ji-eun's departure.

問：人氣歌謠對音樂產業有什麼影響？
答：人氣歌謠對音樂產業有推動作用，能夠提高歌手的知名度，促進音樂作品的銷售。