You've never come across this before?
I found it, by pure chance on one of my feeds: Stylophone!
No, I'm afraid not.
It's like a mini electric keyboard, of which the keys cannot be pressed as they rely on contact with a metal stick to connect...
I think back in the 70s there was a mini-craze for a mini musical keyboard which operated with a stick that ran over the keyboard, quickly moved...
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