The Dobro is a type of resonator guitar that originated in the United States in the 1920s. It is known for its distinctive sound, which is produced by a metal resonator cone located under the strings. This design amplifies the vibrations of the strings, giving the Dobro its unique, bright tone that is popular in various music genres, especially bluegrass and country. Typically played with a slide, the Dobro is often associated with the Hawaiian music style, but it has evolved to fit many other musical contexts. The instrument is usually made of wood and features a round or square body, making it visually appealing as well as functional.