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{{About|chromas in general|that in the diatonic scale|Chromatic semitone}}
{{About|chromas in general|that in the diatonic scale|Chromatic semitone}}


The '''chroma''' (precisely the '''moschroma''') of a [[mos scale]] is the interval that is the difference between the large step and the small step in the scale. In particular, the chroma in the [[diatonic]] scale is the [[chromatic semitone]], or augmented unison, for example, the interval of C-C#.  
The '''chroma''' (precisely the '''moschroma''') of a [[mos scale]] is the interval that is the difference between the large step and the small step in the scale. In particular, the chroma in the [[diatonic]] scale is the [[chromatic semitone]], or augmented unison, such as the interval of C–C♯.  


In staff notation, alteration by the chroma can be represented by the sharp (#) or flat (b), as is shown above. In [[diamond-mos notation]], it should be noted that they are reserved exclusively for the diatonic scale, whereas am (&) and at (@) are used for other mos scales.  
In staff notation, alteration by the chroma can be represented by the sharp () or flat (), as is shown above. In [[diamond-mos notation]], it should be noted that they are reserved exclusively for the diatonic scale, whereas am (&) and at (@) are used for other mos scales.  


Moving one note in a mos scale by a chroma leads to a [[modmos scale]] if the result is not just a transposition of the original mos scale.
Moving one note in a mos scale by a chroma leads to a [[modmos scale]] if the result is not just a transposition of the original mos scale.