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 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.
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