Several blind Thereminists have visited Theremin World including our very own Thomas Grillo.
I have not met my 22 yr old neighbor yet but he has skill beyond human, maybe metaphysical. He has traveled around Temecula Valley the last two years playing the local wineries and pubs. He plays a dozen musical instruments. It is interesting in how he does not know how good he is, a humble musician. Only a handful of people in the world have his gift.
The theremin I could present him has not been built yet, I think of a theremin relationship as symbiotic and together they would be naturally beautiful.
Thinking out loud...
Christopher