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• 10:08, 17 December 2025 Vector talk contribs created page Chromatic semitone (Created page with "{{Infobox interval|2187/2048|names=Chromatic semitone, augmented unison|name=Chromatic semitone, augmented unison|Name=Chromatic semitone, augmented unison}} The 3-limit '''chromatic semitone''', also called the '''augmented unison''' ('''A1''') and represented by the ratio '''2187/2048,''' is the difference between the large and small steps of the MOS diatonic scale. It is generated by stacking 7 fifths and octave-reducing. In Pythagorean tuni...") Tag: Visual edit