7-9-11-15 by 3/2 bihexany

A 15-odd-limit Hexany. This creates a scale of 1 15/14 33/28 11/9 5/4 55/42 3/2 11/7 45/28 5/3 11/6 55/28 2/1, with steps of 15/14 11/10 28/27 55/54 22/21 63/55 22/21 45/44 28/27 11/10 15/14 56/55. Despite having many perfect fifths, this is still quite lopsided, with three microtonal steps and a gap of over a while tone at the other side, making not the melodically optimal way of expanding out the base hexany

Circle diagram

! 7-9-11-15_Hexany.scl
!
7 9 11 15 2-combination Hexany
12
!
119.442
284.447
347.407
386.313
466.850
701.955
782.492
821.397
884.358
1049.362
1168.805
1200

Suggested keyboard mapping: C Db Eb F G# A C.