George, I believe the example you cite is related to the MIDI channel limit. As stated in the YPG-625 manual: "By default (factory settings) the instrument ordinarily functions as a 16-channel multi-timbral tone generator,"

I believe the Casio 10 voice polyphony (for some tones) refers to actual voices played on the instrument in real time. If my interpretation is correct, I feel this is inadequate. As best I can determine, on my YPG-625, every tone uses one (1) voice of polyphony -- including the XG piano/string sound (though the Live! piano and ensemble strings dualed up sound much better). All the tones are stereo. Eg. You can hear more piano bass coming out of the left speaker, and more treble coming out of the right speaker. Yet, the 32 voice limit still applies.

I think of these models more as live performance instruments. If you want serious sequencing, I think you go to a computer.

From what I understand, reading this board and a couple others, the stereo piano sound on the Privias have a 16 voice limit. There would be some serious drop outs on some pretty simple songs. "Send In the Clowns" is one that comes to mind. (The piano arrangement that everyone plays.)

Rick