Not 100% sure if I am understanding what you mean here NYer.. but here goes. On the PA80 you can create or modify a style in the chorfd voicing of your choice. Most of the styles are constructed with C major ( not C M7 as on past Korg arrangers ), but there is a control on the main screen that allows yuo to edit or create a style part using any chord you wish.
Part 2.. Are you referring to step recording ? This can also be done on the PA80.
AJ
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AJ