曲库原有专辑；曲库原有歌曲；查找歌手信息；曲库原有歌手（歌手的排序）；查找专辑信息；专辑的删除；查找歌曲信息；歌曲的插入；快乐的歌；悲伤的歌(Qu library original album; Qu library original songs; find the singer information; Qu library original singer (singer sorting); find album information; album deletion; find song i