标签：话题作文 话题 英语六级作文
字数：2000字
提要： a composer writes a work, but no one can hear it until it is performed. professional singers and players have great responsibilities, for the composer is utterly dependent on them. a student of music needs as long and as arduous a training to become a performer as a medical student needs to become a doctor. most training is concerned with technique, for musicians have to have the muscular prof..