266/255

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Interval information
Ratio 266/255
Monzo [1 -1 -1 1 0 0 -1 1
Size in cents 73.1147
Name(s) Mercurial Chromatic Semitone
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266/255 or the mercurial chromatic semitone, is the difference between a 19/17 whole tone and a 15/14 diatonic semitone. It appears when mercury meantone is extended beyond a heptatonic scale.