12.27  Just scale; scale of Just intonation. Musical scale formed by setting the major triads to have the frequency ratio 4:5:6 and the minor triads to have ratios of 10:12:15, which makes major and minor triads as consonant (smooth) as possible.

Annotation 1                  See Table 2.

Annotation 2                  For consecutive triads, the highest note of one triad is the lowest note of the next.

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