The crossword solution for the term 'Instrument for Israel Kamakawiwo'ole' is 'UKE', which stands for ukulele. The ukulele is a four-stringed instrument that originated in Hawaii and is associated with Hawaiian music. Israel Kamakawiwo'ole was a Hawaiian musician who popularized the ukulele in the late 20th century, and is best known for his medley of 'Somewhere Over the Rainbow/What a Wonderful World'.