27afdo

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27afdo (arithmetic frequency division of the octave), or 27odo (otonal division of the octave), divides the octave into 27 parts of 1/27 each. It is a superset of 26afdo and a subset of 28afdo. As a scale it may be known as mode 27 of the harmonic series or the Over-27 scale.

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27afdo

28afdo →

Prime factorization	33
Dual sharp fifth	41/27 (723.197c)
Dual flat fifth	40/27 (680.448c)