I personally think there are already more then enough styles on the market for almost any kind of music....plus with an arranger you can edit them all till your hearts content or even make your own from scratch if your a good enough player. Most of "today's music styles" are way beyond using an arranger KB solo....after all most of it is all done on computer to start with. I would stockpile what already out there as in years to come arr Kb's will slowly dissolve as will the generations IMO.