My suspicion about why arranger keyboards don't do it well even when pre-programmed with the changes, is that the sequencer just sends each chord into the arranger engine at the right time ... the arranger engine remains without the "coming up next" cue.

It's harder to understand/appreciate why BIAB may not do well as it might, because it does know what and when the next chord will be wanted. Maybe it's just an expectation thing. Possibly even knowing the chords remains limiting because the chords don't say where the melody will go, though contra-motion is common enough. There are supposedly walking bass styles and "Chord Options" which specify walking bass. I have to say that I personally haven't thought very much about how well the bass behaves/responds.

I really think this doesn't need neural-networks, LLMs or any AI-type tools as the sequences are generally pretty logical.

Jazz relative beginner, starting at a much older age than was helpful.
AVL:MXE Linux; Windows 11
BIAB2025 Audiophile, a bunch of other software.
Kawai MP6, Ui24R, Focusrite Saffire Pro40 and Scarletts
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