Yes, that's possible, but the factory styles are pretty well matched within the arranger styles. I like Korg's choices with all their canned instrumentation, but when I am in manual bass mode - all the accompaniment tracks are silent and I just use the drums. I'll need both a think ... unless a workaround surfaces. I doubt that Korg will allow it though - it'd be like Lincoln/Mercury allowing a custom order of a Town Car in Lime green. (yuk) Ford wouldn't want their name in that one!