Why did the ancient Greeks choose tetrachords as the basis for their musical theory rather than some other structure?

  • Be warned, questions like this can be impossible to answer -- often there's no particular reason why a culture develops its musical thinking a certain way rather than all the other ways it could have. But I'm no classicist so don't be put off, there may be an established answer out there...
    – helveticat
    Oct 1, 2023 at 14:47


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