常見問題：
問：Q2: When was the duo "Fly to the Sky" formed? 答：A2: Fly to the Sky was formed in 1999.
問：Q4: What genre of music does "Fly to the Sky" specialize in? 答：A4: Fly to the Sky is known for their R&B and soulful ballads.
問：冰桶挑戰對ALS研究的影響是什麼？ 答：冰桶挑戰成功地提高了公眾對ALS的認識，並為研究籌集了大筆資金，加速了對該疾病的研究進程。