Violin playing is a physical art with great traditions and history. It is a hollow instrument, made of maple or spruce, with a long neck and four perfectly tuned strings. Prices can vary, with Stradivari the most expensive. In the hands of a skilled player, the violin is incredibly agile and can produce rapid and difficult sequences of notes. It is versatile enough to produce pure and intimate music all alone or carry a melody above a voluminous and powerful orchestra.