If you're not wedded to Korg, the Roland G70, E50, E80 etc. had this facility. Roland also bundled some software with the BK-7m called Style Converter, which was designed to convert a MIDI to a Roland-compatible style. However the later BK's like the BK-9 did not have this feature built into the menus.
I never tried Korg's "bot". But it seems to me like this would be easier with PC software. My $.02.