Intervals up to one octave The following are the intervals up to one octave. According to standard interval naming, each interval semitone span has two names - both are shown. Where appropriate, the diatonic names are given first, as they are more common ('diatonic' intervals are those produced by the major and minor scales - all others are 'chromatic' intervals). The name used for the interval depends on its context within the music - refer to musical theory books. Because of the Balanced keyboard's regular and consistent layout, the physical key spacings of these intervals are the same across the whole keyboard. There are two mirror-image shapes for each interval, one for a bottom-row starting note and one for a top-row starting note.

Minor 2nd / augmented unison - 1 semitone