All this is nothing new it's on many Yamaha arrangers its the same method used multitracking on any workstation sequencer,...BUT, let me say if you are not talented enough to be able to record all the parts almost perfectly results will vary BIG TIME. Yes it can be done on yamaha, korg, ketron, roland, in different ways,..is it easy NO!....can it be done? Yes, of course, with practice and experience. These are on-board style creating features should make everyone KEEP their arranger KB's forever as why not?...you can just keep making custom styles using something like what is shown in the demo, right? hey give it a try and see wheat do you got to lose?....have fun!