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Which modes did Henricus Glareanus add in Dodecachordon?
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The universality and innate nature of music, and the pentatonic scale, as demonstrated by singer Bobby McFerrin.
In his 1547 treatise Dodecachordon, the Swiss humanist Henricus Glareanus expanded the traditional system of eight church modes to twelve. To accommodate the evolving musical practices of his time, he added two new pairs of modes, bringing the total to twelve.123
The modes added by Glareanus were:
- Ionian mode and its plagal form, the Hypoionian mode: These modes correspond to the modern major scale and have C as their finalis.1
- Aeolian mode and its plagal form, the Hypoaeolian mode: These modes correspond to the natural minor scale and have A as their finalis.1