常見問題：
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：4. Q: What was Secret's debut song? 答： A: Secret's debut song was "I Want You Back," released in 2009.
問：Q2: When was the Korean boy band "GOD" formed? 答：A2: The Korean boy band "GOD" was formed in 1998 and quickly gained popularity in South Korea.