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go site Essentially a conventional grand piano, the Elektrochord used two strings per note, except for the bottom eight notes. Only one string struck by the hammer; the other string, which is shorter and set at a much lower tension, is allowed to vibrate in sympathy. Electrostatic pickups placed on different parts of this string can be set both vertically and horizontally to achieve a wide range of tones and attack characteristics. As an optional extra the Elektrochord could be fitted with a radio or gramophone.