Hi Lee,
Korg had an onboard function that converted midi songs to styles. Some worked , some didn’t. I doubt the type of style you’re referring to would have worked. The type of stuff I liked didn’t convert too well. I gave up.
I kept using the midifile to style option ( not same as song to style) to convert my Yamaha styles across. But, the type of midi file I’m referring to , didn’t have chord changes except in intro and endings. These weren’t song midi files, they were a midifiles based on a style.
Whereas Korg could do it onboard, there is yamaha software around that supposedly does it. Haven’t tried doing it , so don’t know how successful it would be.
I do have Style Magic, but haven’t gotten round to using it yet.