8 авг 1898 г. - Telharmonium 1898 - This was an early electrical organ. It was invented by Thaddeus Cahill. However it cost a huge amount of money as it was the first of its kind. It used tone wheels to trigger sounds. It was largely unsuccessful as it was impractical and interfered with telephone lines.
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8 авг 1898 г.
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~ 127 г назад