Are you talking about automatic chord recognition as a vst/dxi interface between a Midi keyboard (not arranger) and a sampler like VSampler3 (mapping midi channels to software samples per channel) to a sequencer (like SONAR)?

Seems like one could set drum tracks to loop from a program like Fruity Loops (dxi'd to sonar) + bass/style voices and play realtime (say on the first 4 channels), also being able to select sampled voices there.

VSampler3 will work with the PA-80, for example, if the tracks are set up properly (i.e., playing the Sampler's voices for a style rather than the PA-80s)

All that's missing is the chord recognition AI..

I think, anyway