Ukulele

The ukulele (pronounced /ˌjʉːkəˈlɛɪli/ from the Hawaiian ʻukulele, pronounced /ˈʔukuˈlɛlɛ/) is a musical instrument with four strings. It is also called the uke for short. Ukuleles are part of the guitar family of instruments. The strings are usually tuned G, C, E, A or A, D, F_#, B. Ukuleles normally have nylon strings or gut strings.

Ukulele

String instrument
Classification	String instrument (plucked, nylon stringed instrument usually played with the bare thumb and/or fingertips, or a felt pick.)
Related instruments
Bowed and plucked string instruments, namely the cavaquinho

Ukuleles commonly come in four sizes: soprano, concert, tenor and baritone. Sopranino and bass ukuleles also exist. Sopraninos are tuned to standard tuning, however, baritone ukuleles are tuned to D, G, B, E (the top four strings of a guitar). Bass ukuleles are tuned E, A, D, G (bass guitar and double bass tuning).

The ukulele was invented in the 19th Century AD in Hawaii, where people got the idea from small guitar-like instruments known as cavaquinhos brought to the island by Portuguese sailors.