常見問題:
問:4. Q: What was Secret's debut song? 答: A: Secret's debut song was "I Want You Back," released in 2009.
問:9. Q: What is the reason behind Song Ji-eun's departure from Secret? 答: A: Song Ji-eun left Secret in 2014 to focus on her solo career and acting.
問:冰桶挑戰的起源是什麼? 答:冰桶挑戰最早起源於2014年,由前棒球運動員皮特·弗蘭斯(Pete Frates)等人發起,目的是為了提高對ALS的認識和籌款。