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| | Diatonic scale (Site not responding. Last check: 2007-10-13) |
 | | It is sometimes used to refer to all the musical modemodes, but is generally used only in reference to the major and minor scales. |
 | | It contains seven note (music)notes to the octave, corresponding to the white keys on a piano, obtained from a interval cyclechain of six successive perfect fifthfifths in some version of meantone temperament, and resulting in two tetrachords separated by interval (music)intervals of a whole tone. |
 | | These unique relationships are as follows: Only certain divisions of the octave, 12 and 20 included, allow uniqueness, coherence, and transpositional simplicity, and that only the diatonic and pentatonic subsets of the 12 tone chromatic set follow these constraints (Balzano, 1980, 1982). |
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