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Story of the Flute
invented or adopted a new kind of open key—more especially for the G♯—worked by a lever which ended in a ring placed over the hole of the note below. (Fig. 12.) This was the earliest contrivance by means of which an uncovered hole and an open key over another hole could be closed by one finger, which is a leading feature of the modern open-keyed system, and has been very largely adopted on all Böhm flutes. The history and details of Böhm's flute, however, deserve a separate chapter.
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