“歌唱者”的英语？

听众要求歌唱者再演唱一次.The audience encored the singer.钢琴家替歌唱者伴奏.The pianist accompanied the singer.合唱队演唱得很不和谐(歌唱者不听从指挥).The choir gave a ragged performance , ie The singers were not following the conductor....