12 ene 1935 año - Hammond Organ 1935 -
Used draw bars with 6 settings,
each responding to the
harmonics of the note played.
Very portable in comparison
to the Telharmonium. It was
still in production until 1975.
Used tone wheels similar to
that of the Telharmonium.
Añadido al timeline:
Keyboard Instruments Pre 1963 Joe Branch
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