Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. The nail violin is a musical instrument which was invented by German violinist Johann Wilde in 1740. Wilde was inspired to create the instrument when he accidentally drew his bow across a metal peg, which produced a musical sound. The instrument consists of a semicircular wooden soundboard, approximately 1.5ft by 1ft in size, with iron or brass nails of different lengths arranged to produce a chromatic scale when bowed. The bow used was fitted with coarse black horsehair, which produced sound by friction. An improved instrument, now in the collection of the Hochschule in Berlin, has two half-moon sound-chests of different sizes, one on the top of the other, forming terraces. In the rounded wall of the upper sound-chest are two rows of iron staples, the upper giving the diatonic scale, and the lower the intermediate chromatic semitones. The instrument has a sweet bell-like tone but limited technical possibilities.

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