Yo scale

The yo scale is used specifically in folk songs and early popular songs and is contrasted with the in scale which does contain minor notes.

[3] It is defined by ascending intervals[clarification needed] of two, three, two, two, and three semitones.

An example yo scale, expressed in western pitch names, is: D - E - G - A - B.

[4] More recent theory[5] emphasizes that it is more useful in interpreting Japanese melody to view scales on the basis of "nuclear tones" located a fourth apart and containing notes between them, as in the min'yō scale used in folk music, and whose pitches are equivalent to the second mode of the yo scale:[6] In India's Carnatic music, this scale corresponds to Udayaravichandrika.

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