I doubt if they were set "willy nilly"...the Tyros3 and the S910 seem to be set the same way, so there is a common pattern.

I'll probably change the release and store it in a registration memory...that way it will be easier to add it to an OTS.
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Yamaha Tyros4, Yamaha MS-60S Powered Monitors(2), Yamaha CS-01, Yamaha TQ-5, Yamaha PSR-S775.