A hard case is important because violins are such delicate instruments. Strings come in three basic varieties: gut, which is expensive and difficult to take care of, but which offers a complex range of sound; steel, which is loud and bright but can sound scratchy, and synthetic, which is smooth, clear, and not as unpredictable as gut. Each type's name refers to the core material around which metal wire is wrapped to create the string. Most beginners should go with synthetic core strings, such as nylon core. The bow should be new, or newly re-haired.