You are absolutely correct, Mike. Thank you. I missed the next instruction assuming that once "duet mode on" was visible on screen nothing more was needed. It works perfectly now and all is well. Incidentally, for those contemplating the purchase of a AP-650, after playing mine my teacher is now thinking of trading in his "other" piano. He starts showing me something and keeps going and going. He's playing it more than me during my hour lesson. I'm going to ask for a discount!