• WARNING: Tube/Valve amplifiers use potentially LETHAL HIGH VOLTAGES.
    Building, troubleshooting and testing of these amplifiers should only be
    performed by someone who is thoroughly familiar with
    the safety precautions around high voltages.

Novachord, The first all electronic instrument, 193 tubes

I watched it - the following video was of a player-piano. Wonder why Hammond never put that with his inventions?

Interesting the lengths they used to go to to get "canned" music back then. One would think a "player" version of Hammond's stuff would have been a hit then, particularly if it could change the kind of sound it made on the fly, as encoded in the paper roll. If anyone could have done it, I'd think Hammond would have been the one to pull it off.