Tony, some of the older keyboard didn't recognize the various fingered modes. Of course, I'm going back to the days of the PSR-5700 and earlier models of other brands.

Gary cool
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PSR-S950, TC Helicon Harmony-M, Digitech VR, Samson Q7, Sennheiser E855, Custom Console, and lots of other silly stuff!

K+E=W (Knowledge Plus Experience = Wisdom.)