I have had the same problem with credibility. Sometimes I nudge the keyboard with the heel of my left hand while playing, to try and prove I'm really playing.

I never pretend to do anything, and hate having to prove anything, but that is where we're at.
Bernie
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pa4X 76 ,SX900, Audya 76,Yamaha S970 , vArranger, Hammond SK1, Ketron SD40, Centerpoint Space Station, Bose compact