常見問題：
問：人氣歌謠是什麼意思？ 答：人氣歌謠是指在音樂排行榜上排名靠前、受到廣泛歡迎的歌曲。
問：人氣歌謠通常在哪裡播出？ 答：人氣歌謠通常在廣播、電視、音樂節目以及音樂串流平台上播出。
問：8. Q: Has Secret appeared on any variety shows? 答： A: Yes, Secret has appeared on various South Korean variety shows, such as "Invincible Youth," "Law of the Jungle," and "Hello Baby."