So there likely was a time when the Greeks had a pentatonic scale that became diatonic and that Pythagoras came along to explain how it all worked within an octave. Small wonder that the lyre was a sacred instrument to the Pythagoreans no doubt a sheer coincidence that it was the instrument of choice for Orpheus and that the Druids also considered mastery of the sacred lyre essential to their discipline (and Irish coins display the lyre to this day). Modern times replace the lyre with a guitar, but the underlying principles are the same.

The vowels are spoken, they come from within, from the heart. And the heart is the ultimate metronome of life. It is the beat we dance to. European music has taken emphasis off that beat in favour of harmonic structure to produce some very beautiful, lush music. The music lacks "push" however. It is not propelled forward by its own structure but is driven by external additions of percussion which impose a beat over the music—and even then only comparatively rarely.