Editing Enharmonic scale (section)

{{Short description|Ancient Greek musical scale}}
{{for|enharmonic keys|Enharmonic}}
[[Image:Enharmonic scale segment on C.png|thumb|Enharmonic scale [segment] on C.<ref name="Moore">{{cite CEM |url=https://archive.org/stream/completeencyclop00moor#page/n286/mode/1up |year=1875 |title=Enharmonic scale |page=281}}. Moore cites Greek use of quarter tones until the time of Alexander the Great.</ref><ref name=Callcott-1833/> {{audio|Enharmonic scale segment on C.mid|Play}}<ref name=Callcott-1833/> Note that in this depiction C{{music|#}} and D{{music|b}} are distinct rather than equivalent as in modern notation.]]
[[Image:Enharmonic scale on C.png|thumb|Enharmonic scale on C.<ref name=Elson-1905>
{{cite book
 |first=Louis Charles |last=Elson 
 |year=1905
 |title=Elson's Music Dictionary
 |page=100
 |publisher=O. Ditson Company
}}
</ref>]]
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DON'T EDIT THIS UNLESS YOU ARE AWARE THAT "enharmonic scale" is very different from "enharmonic note". Thanks.
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In music theory, an '''enharmonic scale''' is a ''very'' [[musical system of ancient Greece|ancient Greek musical scale]] which contains four notes tuned to approximately [[quarter tone]] pitches, bracketed (as pairs) between four fixed pitches.<ref name=ML-West-1992/> For example, in modern [[microtonal]] notation, one of the several '''enharmonic scales''' aligned with the conventional key of [[C major]] would be
: {{sc|'''C'''}} (0[[musical cents|&nbsp;¢]]), {{sc|'''D'''}}{{music|##}} (400[[musical cents|&nbsp;¢]]), {{sc|'''E'''}}{{music|t}} (450[[musical cents|&nbsp;¢]]), {{sc|'''F'''}} (500[[musical cents|&nbsp;¢]]),
: {{sc|'''G'''}} (700[[musical cents|&nbsp;¢]]), {{sc|'''A'''}}{{music|##}} (1000[[musical cents|&nbsp;¢]]), {{sc|'''B'''}}{{music|t}}(1150&nbsp;¢), {{sc|'''c′'''}} (1200[[musical cents|&nbsp;¢]]).

The symbol {{music|t}} in this example represents a [[half-sharp]], or sharpening by a [[quartertone]] (50[[musical cents|&nbsp;cents]]), although raising pitch by exactly 50&nbsp;cents is not at all required, nor even usual among the different Greek enharmonic tunings, which tended instead to have the movable, inner notes (here, {{sc|'''D'''}} & {{sc|'''E'''}}; {{sc|'''A'''}} & {{sc|'''B'''}}) variably spaced, with about 20~30&nbsp;cents between each other, and likewise spaced from their closest fixed note (for this example those are {{sc|'''C'''}}, {{sc|'''F'''}}, {{sc|'''G'''}}, and {{sc|'''c′'''}}).<ref name=ML-West-1992/>