The ukulele is a small, four-stringed musical instrument that originated in Hawaii in the 19th century. It is a member of the lute family of instruments and is closely related to the Portuguese machete and the rajao. The ukulele is known for its bright, cheerful sound and is often associated with traditional Hawaiian music. It is typically played by strumming or picking the strings with the fingers. The ukulele gained popularity in the early 20th century through the efforts of King Kalakaua, who was an accomplished ukulele player and enthusiast. It became an integral part of Hawaiian culture and was often featured in hula dances and other traditional performances. In the 1920s and 1930s, the ukulele experienced a surge in popularity on the mainland United States, with many musicians incorporating it into their acts. This period, known as the "ukulele craze," helped to cement the instrument's place in American popular music.