I know very well the Midjay Plus, because it has the same sounds than the Ketron SD2 that I connect to a computer with my vArranger PC software to be able to play Midjay Plus on the SD2.

The bank1 is MSB 0
The bank2 is MSB 1
The bank3 is MSB 10

MSB is Ctrl 0
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Regards,

Dan
https://www.varranger.com