Factor 9 grid

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Factor 9 grid is a type of musical scale which was first proposed for esoteric reasons, as a supposed replacement to 12edo's irrational nature which was purported to have negative properties for humanity, and a switch to just intonation was supposed to fix them.

The scale goes as follows: 126, 135, 144, 153, 162, 171, etc. Hz until 234 Hz and closes at 252, and is multiplied by the octave.

Factor 9 Grid temperament (495 & 666)

Subgroup: 2.3.5.7.11.13.17.19.23

Comma list: 442/441, 715/714, 2300/2299, 3060/3059, 3179/3174, 9025/9009, 57375/57344

POTE Generator: 63.0631c (~27/26)

Vals: 171f, 495, 666