Electronic Musical Instruments 1870-1990

Invention: The Musical Telegraph or Harmonic Telegraph
Inventor: Elisha Gray
Year of Invention: 1876
Country of Origin: USA
Brief description:
When Gray accidentally discovered he could control sound using a primitive electromagnetic circuit, he invented a basic single note oscillator.

The unit's oscillations were broadcast over telephone lines, although later versions included the addition of a simple loudspeaker.

I don't believe any recordings were made of this peculiar "instrument", although it would most certainly produce an interesting timbre.
For more information on Electronic Musical Instruments, visit http://www.obsolete.com/120_years/

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