Hi Dan

Nice of you to chime in.

Yeah, I see what you mean about "adds layers of complexity".
There are a LOT of weird adjustments to melodies, especially.

I'm going to start with simple .STY file playing that won't match Yamaha exactly, but will probably still sound, ummm, ok at least.

And from there, I'll probably just NOT do all the weird halfstep adjustments that Yamaha does.
Chords will be adjusted from the recorded chordal set to the played set.
But for phrases, you'll have to just come up with extra tracks when they start sounding bad against major.

Which means most style files will have problems playing directly. But I think with a few tweaks they'll play without the "yamaha complexity".

You would think that complexity would drive "style composers" insane.