> And these conventions are for example different between western and traditional indian, arabic or chinese music. TFA does acknowledge that it only really cov

> And these conventions are for example different between western and traditional indian, arabic or chinese music. TFA does acknowledge that it only really covers western music. But on top of that, the other musical cultures you mention are in fact remarkably similar to western musical culture at the level TFA is describing. They differ significantly in terms of what they do with e.g. dividing the octave into 12, but they all make heavy use of the 3/2 ratio and other similar concepts. If you want to get really different, check out Byzantine musical culture. They have no octave equivalence (!) and their notation is 100% relative (i.e. they write melodies down as sequences of intervals, not sequences of absolute notes). Even so, they still use 12 tones per octave ...