Let k denotes the number of parts of the whole eight bar period, j - number of the current part and nj - the number of bars in the current part. Thus the partition of the period could be written as follows: Sn = n1 + n2 + ... + nk.

There are four variants of Sn inside the generator:
Sn1 = 2 + 2 + 4; - summation structure
Sn2 = 2 + 2 + 1 + 1 + 2; - fragmentation with ending structure
Sn3 = 1 + 1 + 2 + 1 + 1 + 2; - repeat summation structure
Sn4 = 2 + 2 + 2 + 2; - square structure

• Main principles

• Scale structure

• Rhythmical structure

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