He says whatever you call it, jazz has played a huge role around the world in opening up musical creativity.

VOA: special.2009.04.17

So, what happens here is this opening phrase, that we'll call A-- musicians like to label stuff just with alphabetical labels to keep it simple.

那么,首句这里,我们称作A,音乐家喜欢用字母,来做标记,这样比较简单

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