What do we mean by ‘twentieth-century music’? And how are we to square this with the musics of a twenty-first century that is now nearing the end of its second decade? These and other questions are salient for a journal that identifies the former century in its title yet regards the latter as equally within its remit. Just how are we to think the two centuries together? Should we consider the music of the twenty-first century as a continuation of tendencies from the late twentieth? Or are there tendencies within musical production and consumption that have a definitively twenty-first-century character and so mark out the beginning of a new era? If so, when and with what, iconically speaking, did the twenty-first century begin and the twentieth end? Or do these historiographic categories even continue to have currency?

中文翻译：

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定义二十世纪和二十一世纪的音乐

我们所说的“二十世纪音乐”是什么意思？我们如何将其与现在接近第二个十年结束的二十一世纪的音乐相提并论？这些问题和其他问题对于在标题中标明前一个世纪但同时将后者视为其职权范围内的期刊而言是突出的。我们如何看待这两个世纪？我们是否应该将 21 世纪的音乐视为 20 世纪后期趋势的延续？或者，音乐制作和消费中是否存在具有明确的 21 世纪特征的趋势，从而标志着一个新时代的开始？如果是这样，从象征性的角度来说，21 世纪开始和 20 世纪结束的时间和原因是什么？或者这些史学类别是否继续存在？