"The violin, sometimes known as a fiddle, is a wooden string instrument in the violin family. Most violins have a hollow wooden body. It is the smallest and highest-pitched instrument in the family in regular use. The violin typically has four strings, usually tuned in perfect fifths with notes G3, D4, A4, E5". --WikipediaThe 3 most popular types of viloin strings: nylon core, steel core and steel rope core.