246. THE TRINITY OF GENDERS OF SCALES BASED ON OVERTONES, UNDERTONES, EQUAL TEMPERED (BACH) SCALE AND THE CORRESPONDING ANCIENT GREEK MUSICAL GENDERS : ENHARMONIC, CHROMATIC , DIATONIC.

SEE ALSO

http://barthopkin.com/otonuton-scales/

http://barthopkin.com/tangular-arc/

Bill Wesley -Arithmetic Array Mbira Jam

https://www.youtube.com/watch?v=nefHvt7cTw4