Stan,
I believe, this would be difficult to program. Style demos are mixed audio. However, new MTP Library (F7) is a non-modal object. You can place the style with double click and audition your chord-sheet on the fly and still have access to mixer. Keep in mind, process is destructive, but a good way to browse different styles to find the groove you are after using your chords & arrangement.

See my video here:
https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=821055#Post821055