Listen to 快乐歌 (童声合唱) online. 快乐歌 (童声合唱) is a Chinese language song and is sung by Blue Sky Choir. 快乐歌 (童声合唱), from the album 刘欢音乐档案, was released in the year 2025. The duration of the song is 2:24. Download Chinese songs online from JioSaavn.