I came to the PR604 from an acoustic piano and have never played a keyboard in my life so the difficulty for me has been to learn how to play the piano as a keyboard at all! You simply set the mode (go to Autoplay Chord - Mode, and select Pianist instead of Basic, Advanced 1 or Advanced 2) as pianist and all the goodies are available to you just as they would be if you were using one-fingered LH chords. Tony Pegler's training videos for the KN6 show the details for APC, OTP, MSA, Panel Mem etc, but it's really easy. As Aud says, the main thing is to make sure, after all of your setting up, that you don't have the keyboard split. What I have not been able to discover is whether there is the "break" facility that the keyboards have with the synchro/break button because it is not marked as such nor mentioned in the abysmal owner's manual. Sorry you don't like the PR604, Aud, but did you try all of the key-stroke adjustment options?