请将以下段落压缩到3句话内，保留主题和关键词。Violin is a string instrument, usually with four strings tuned in perfect fifths. It is often played with a bow made of horsehair or occasionally by plucking the strings with the fingers, a technique known as pizzicato. The violin is widely used in various forms of music including classical, folk, and jazz, and is an integral part of orchestra sections. Its rich history and versatile sound have made it one of the most popular instruments in the world. Tiny changes in finger position can produce a wide range of tones, making it an expressive tool in the hands of skilled players.
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小提琴是一种四弦乐器，通常调成纯五度。它既可以使用马尾制成的弓来演奏，也可以通过手指弹拨（即拨奏）来演奏。小提琴因其丰富的历史、多样的音色和表现力，广泛应用于古典、民间和爵士音乐中，是世界上最受欢迎的乐器之一。
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