WOW, I remember my 1980's Yamaha HS8T organ had AOC, and of course styles as such.....I guess it was a predecessor to our current arrangers. It sure had great sounds for the times and a killer audio system. 2 programmable foot SIDE switches on the expression pedal AND a knee bar. I would love to have all that available on an arranger. Keybeds were top quality too. A little hard to Gig with LOL, pretty dang heavy.