Israel Kamakawiwo'ole was a Hawaiian musician who was known for his unique style of playing the ukulele. He was famous for his medley of 'Somewhere Over the Rainbow/What a Wonderful World' which was featured in many films and television shows. Instruments for Israel Kamakawiwo'ole included ukuleles and ukes. Ukuleles are four-stringed instruments that are typically made of wood and have a small body. Ukes are similar to ukuleles but are usually smaller and have only four strings. Both instruments are popular in Hawaiian music and were used by Israel Kamakawiwo'ole in his performances.