常見問題：
問：7. Q: Has Secret released any albums? 答： A: Yes, Secret has released several albums, including "Moving in Secret," "Secret Time of the Day," and "Letter from Secret."
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：參與冰桶挑戰的名人有哪些？ 答：參與冰桶挑戰的名人包括比爾·蓋茨、馬克·祖克伯、賈斯汀·比伯、泰勒·斯威夫特等。