Hi DonM and Denny. I'm glad you shared your experience with the psr9000/9000pro. I'm sure that same polyphony issue would apply to any arranger mine included (wk8) if you pumped enough notes into it. The last time I can remember having an issue with polyphony was when I was driving an ensoniq u220 sound module with cakewalk sequencing software. The u220 had 30 note polyphony and every now and then it would drop some notes usually where I had a string section playing. I can't remember any notes dropping with my wk8. Have a happy Thanksgiving.