常見問題：
問：Q3: Who are the members of the duo "Fly to the Sky"? 答：A3: The members of Fly to the Sky are Hwanhee and Brian Joo.
問：Q9: Are there any notable collaborations by "Fly to the Sky" with other artists? 答：A9: Yes, they have collaborated with various artists, including Epik High and Wheesung.
問：冰桶挑戰的目的為何？ 答：冰桶挑戰的主要目的是提高對肌萎縮性側索硬化症（ALS）的認識，並為相關的研究和治療籌集資金。