This is a very elementary paper that i thought i would share.
It touches upon the use of Bi-level Moments of symmetry as well as chains with slight variations.
All is discussed in terms of an undefined 12 but the principle can be applied to any tuning. hope it is helpful. http://anaphoria.com/pentatonics.pdf
It is like a third world application of Xenakis sieve method. but then again we might prefer to apply complex ideas in simple ways than simple ideas to complex ones.
