Watching a performance with one person,.....playing one instrument,......producing one sound, piano ...Guitar, Accordion, Violin, Harp, etc, ....... is all a listener sees and hears to be sensible to them in their mind.....

With that said..and you can try to twist it all you want using an arranger kb which in its own right is technologically Alien to the layman, which produces countless sounds,rhythms, etc, etc, over whelms the listeners senses and in turn you become some sort of automated karaokeish electronic device operator in their minds and who can blame them when they see one thing that produces so many things sound wise? Nothing wrong with it but call a spade a spade I say.