Fran : With vArranger, you can use any midi messages coming from your midi controller, to control any vArranger feature.
And it's very easy with midi learn.

vArranger can play Ketron, Yamaha and Roland styles
I now have a simple but working virtual synth included. To be improved with better samples.
Soundfont and VST direct support will come soon too.
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Regards,

Dan
https://www.varranger.com