9-25-49-81 hexany
An 7-limit Hexany comprised entirely out of square numbers. This creates a scale of 1 441/400 9/8 49/36 81/50 49/25 2/1, with steps of 441/400 50/49 98/81 1458/1225 98/81 50/49. This is essentially a diminished tetrad where two of the notes have variants a sixth tone apart, giving you few conventional harmonies, but plenty of opportunities to hear different kinds of beating effects caused by close notes in different octaves.
! 9-25-49-81_Hexany.scl ! 9 25 49 81 2-combination Hexany 6 ! 168.934 203.910 533.741 835.192 1165.024 2/1
Suggested keyboard mapping: C Db D F Ab B C