| 11. | All these scales meet the definition of diatonic scale.
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| 12. | There is evidence that the Sumerians and Babylonians used some version of the diatonic scale.
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| 13. | The diatonic scale appears in writing throughout history, consisting of seven tones in each octave.
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| 14. | A diatonic scale can be also described as two tetrachords separated by a whole tone.
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| 15. | A just diatonic scale may be derived as follows.
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| 16. | The salamuri has a diatonic scale of one octave.
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| 17. | The remaining notes of the diatonic scale are produced when the bellows are drawn or pulled.
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| 18. | Piano keyboards are designed to play natural notes, and hence diatonic scales, with their white keys.
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| 19. | With this tuning, a diatonic scale is broken into two tetrachords, or groups of four notes.
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| 20. | This is known as Ptolemy's intense diatonic scale.
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