It should be kept in mind that this article presents an overview of 20th century classical music and many of the composers listed under the following trends and movements may not identify exclusively as such and may be considered as participating in different movements 必须注意的是，这篇文章仅仅提领出二十世纪音乐的大纲，所提到的音乐家在一个方面做出贡献，并不代表他只在该领域发挥。
