The violin is not only the most important instrument in the orchestra, but also the most charming in the fields of chamber music, folk music, jazz and so on. Because it is versatile, it can sing melodious and poetic tunes, but also sometimes people feel dizzy. A violin is a stringed instrument with a range of at least three octaves, a body made of wood, and strings made of pure steel. Its length is varied, but its body is often around 36 cm. A violin is a four-stringed instrument that vibrates through its strings. Modern violins date from the early 16th century Ukulele in Europe. Italian violins are the best in the world, especially the Amati. During the violin making process, the strings are subjected to a downward force of 7.7 kilograms. Modern orchestras typically have about 24 violins, divided into the first and second violins, and the violin has more weight than any other instrument in the performance. Their articulation is clear and unrefined, often in sharp contrast to other musical instruments. The Violin is also the Supreme Chamber Instrument for which many composers have composed elaborate music. The best arrangement is the string quartet, which uses two violins, a viola and a cello. In this combination, the violin in the concert of other members of the violin family is undoubtedly noble and comfortable.