here's some more info:

String

The traditional music is characterized by the use of the charango, a small 10-stringed instrument that appeared in Bolivia in the 17th century. Fashioned after the Spanish vihuela, it predates the guitar. Charangos are typically made with an armadillo shell for the back of the sound box, though recent concerns about the extinction of that species has made the use of wood more popular.

Continuing with the family tradition of wind instruments, charangos come in various sizes: charango (24 inches), ronroco ( 30 inches), and walaycho (19 inches). The charango is complemented by the Spanish (nylon string) guitar. Certain regions of the Andes are well known for the use of the harp, violin, mandolin, cuatro, tiple, etc. Contemporary music may use the double bass, electric bass, or electric guitar.

Last change: Jan. 3, 1996