姚恒璐博士写了一本关于本世纪即二十世纪以来的现代音乐创作技法和一些分析音乐作品新理论的书 ,要我为他写个“引言”。我对于本世纪称为现代音乐的许多作品以及新的分析方法都缺乏仔细研究 ,因而对他的这本书本身实在不具备足够发言条件 ,只能说一点书外的话。人们在谈论如 Dr. Yao Henglu has written a book about modern music writing techniques since the turn of the century and the twentieth century and some new theories for analyzing musical works. He asked me to write an “introduction” for him. My lack of careful study of many of the works known as modern music of the present century and of new analytical methods does not give me enough of a speech on the book itself. People are talking about