The Hammond Organ is the most famous electromechanic instrument we know. It is an electric organ designed to give a low cost alternative to church pipe organs.
Hammond organs have dual manuals, meaning that there are two keyboards which have pull-out drawbars that affect the sound. Learn about the rotating speakers ...
The dream of creating a visual music comparable to auditory music found its fulfillment in animated abstract films by artists such as Oskar Fischinger, Len Lye and Norman McLaren; but long before them, many people built instruments, usually called "color
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814-9(April 2002)Engelhardt, Stefan Hein, Lutz Keller, Ursula Klambt, Kerstin Lohse,
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research Circ Res. 2002 Apr 19;90(7):814-9..