I fooled around with the Yamaha at Sam's Club. I couldn't get it to allow me to play two voices. Can it? I had to reach way up to see it, so it was cumbersome. It was set up high so kids wouldn't screw it up. I mean, like play piano and strings at same time. Well, actually, I did do it but it only played piano in right hand. Maybe you have to invoke this through auto-accompaniment with a style?