About BanjoThe banjo is a four, five, or six stringed instrument with a thin membrane, stretched over a frame or cavity to form a resonator. The membrane is typically circular, and usually made of plastic, or occasionally animal skin. Early forms of the instrument were fashioned by African Americans in the United States, adapted from African instruments of similar design. The banjo is frequently associated with folk and country music. Banjo can also be used in some rock songs.