String instruments are well known for their versatile sounds and their heavy contribution to virtually every type of modern music. There are two types of string instruments that use their strings as the main sound source. The first produce sounds by string plucking. The second group produces sound when a bow is used. In this 60-minute video, find out more about these two groups of instruments and how they have evolved over time to became the louder, more powerful instruments that they are today. The instruments made by Stradivari are studied in this film, and the scientific reasons for their superb sounds are examined. The current use of scientific designing of instruments is also featured in this film that brings art and science together to teach about the modern craft of creating instruments.