Hi Bill,
brilliant demo. Only had a chance to watch the first 10 min so far.

Definitely yes, from what I’ve seen to date, would have been doable in a Korg
( not sure about my psr , haven’t checked max no of bars allowable per variation).

Korg, 32 bars allowable per variation ( as well as fill /intro/ending).
I tried it with a couple Band in a Box styles. The style morphs throughout a song, so I thought I’d give it a try.
Basically the idea worked, but biab styles use phrases that don’t really lend themselves that well to an arranger style, so by the time I eliminated the ones that wouldn’t work, it left a fairly bland style.

Thinking though, if someone started with a fairly basic style the core bits, drums bass, piano or guitar rhythm, lengthened it to 16 or 32 bars, the addition of the twiddly bits like the brass , horns etc could make a style more realistic instead of being so repetitive. ( approx 6 min into video).

I’m going to try and watch the rest shortly.

Great find , thank you Bill.