Creative Evolutionary Systems

5 GenJam: Evolution of a Jazz Improviser

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5.3

FIGURE

Phrase from Figure 5.2 played against first four bars of tune from Figure 5.1.

repeated new-note event to a chromatic passing tone, as long as the altered note

is followed by a new-note event. The intent is to break up sequences of repeated

notes and to add some nonscale tones safely. We will see this heuristic again in

the description of how GenJam trades fours.

5.4 GEN ETIC OPERATORS AN D TRAI N ING

The process of creating a new GenJam soloist follows a fairly typical sequence of

initialization, selection, crossover, ...