Technical Criteria
Based on our present chromatic system, a tempered system of 12 sounds, these modes are formed of several symmetrical groups, the last note of each group always being common with the first of the following group. At the end of a certain number of chromatic transpositions which varies with each mode, they are no longer transposable, giving exactly the same notes as the first.There are two complementary ways to view the modes: considering their possible transpositions, and considering the different modes contained within them.
Read more about this topic: Modes Of Limited Transposition
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