I hope the Pizza's good! I think we have confused the creation of particular musical artifacts with the concept of the universal ability to know things that sound good. Even though you don't like the music created from the pentatonic scale should not mean you don't like the sound of a musical instrument heard live that might be used to perform in that style. Is Michealangelo's David a universally accepted thing of beauty? Or the Taj Mahal? Would there be many who despised the look of that building? If we agree on that then logically they stand as reference standards. Many people listen to Bose; but how many would prefer that to real stereo providing they were exposed in such a way as to prevent them attaching price or advertising prejudice to either example? Go Eat; mangia', enjoy the Pizza.