1-9-11-13 hexany

A 13-odd-limit Hexany. This creates a scale of 1 11/9 11/8 13/9 13/8 143/72 2/1, with steps of 11/9 9/8 104/99 9/8 11/9 144/143. With a ratio of nearly 29:1 between the largest and smallest steps, making the smallest one barely in the noticeable range, this works better as a pentatonic scale than a hexatonic one. On the plus side, combining the two neutral thirds and the comma step results in a 5th of 706.88 cents, which is still close enough to just to provide a stable rooting point.

Circle diagram (rotated, JI ratios).

Circle diagram (rotated, cents values).

! 1-9-11-13_Hexany.scl
!
1 9 11 13 2-combination Hexany
6
!
347.407
551.317
636.617
840.527
1187.935
1200

Suggested keyboard mapping: C Eb F F# G# B C.