上海音乐学院演奏厅。万山红、孙健、李秀英、魏松、廖昌永……十几位蜚声乐坛的中青年歌唱家轮流站上小舞台排练。台下的观众只有一个:他们的恩师,女高音歌唱家、声乐教育家、国家终身一级教授周小燕。这是学生们为祝贺周小燕生日,策划的一场音乐会。几个小时过去了,周小燕始终腰身挺直地坐 Shanghai Conservatory of Music Auditorium. Wanshan Hong, Sun Jian, Li Xiuying, Wei Song, Liao Changyong ...... More than a dozen remembered young and middle-aged singer singing stage rotation stage rehearsal. Audience only one audience: their mentor, soprano, vocal educator, national lifelong professor Zhou Xiaoyan. This is a concert planned by the students for their birthday. A few hours later, Zhou Xiaoyan always sit straight waist