Mike, you'll find a bunch of those styles at the PSR Tutorial dot com site. The first ones I encountered came out when the PSR-2000 came on the market.
Gary
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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.)