Banjo

The banjo is a stringed instrument developed by enslaved Africans in the United States, adapted from several African instruments. The name banjo is commonly thought to be derived from the Kimbundu term mbanza. Some etymologists derive it from a dialectal pronunciation of "bandore", though recent research suggests that it may come from a Senegambian term for a bamboo stick formerly used for the instrument's neck

Modern Forms

The modern banjo comes in a variety of forms, including four- and five-string versions. A six-string version, tuned and played similar to a guitar, has been gaining popularity. In almost all of its forms, the banjo's playing is characterized by a fast arpeggiated plucking, although there are many different playing styles.
The body, or "pot", of a modern banjo typically consists of a circular rim (generally made of wood), a metal tone ring, and a tensioned head, similar to a drum head. Traditionally the head was made from animal skin, but is often made of various synthetic materials today. Some banjos have a separate resonator plate on the back of the pot, while others have an open back. There are also electric banjos.

Usage

The banjo is commonly associated with country, folk and bluegrass music. Historically, however, the banjo occupied a central place in African American traditional music, as well as in the minstrel shows of the 19th century. In fact, African Americans exerted a strong, early influence on the development of both country and bluegrass through the introduction of the banjo, and as well through the innovation of musical techniques in the playing of both the banjo and fiddle. Recently, the banjo has enjoyed inclusion in a wide variety of musical genres, including pop crossover music and Celtic punk.

http://en.wikipedia.org/wiki/Banjo