I think that's why BiaB has the option to 'freeze tracks. When you hear a mix that you like, you can freeze it so that that track won't be changed by consecutive generations.

As mentioned, the variables in the final track production depend on many things, including the key, the chord, the available variations, the length of the phrase and more. We don't know the exact method. But this is a reasonable summary.

One song I worked with had a fantastic guitar line on critical bars. I changed the key by a few semitones and could not reproduce that unique lick. It presumably was never recorded in the new key.

Bottom line: if you find something you like, freeze it !


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