"A female singer with a captivating/enchanting voice" 或者 "A female vocalist with a mesmerizing singing voice" 都可以表达“歌声动人的女歌手”这一意思。
其中,“captivating/enchanting/mesmerizing” 都表示“迷人的、令人陶醉的”,用来形容歌声非常动听、吸引人;“female singer” 或 “female vocalist” 则明确指出了是“女歌手”。