A 5-string banjo.
A 4-string “banjar” was brought to the US by African slaves in the 18th century. An individual named Joel Walter Sweeny of Appomattox Court House, VA, is credited with inventing the 5-string banjo when he adapted the banjar by adding a 5th string. The 5-string banjo was most popularized by its use in Bluegrass Music. Brass is used on the frets of the Banjo neck.
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