"Somewhere Over the Rainbow/What a Wonderful World" is a medley of "Over the Rainbow" and "What a Wonderful World", recorded by Hawaiian singer Israel Kamakawiwoʻole. First released on the 1990 album Ka ʻAnoʻi, an acoustic rendition of the medley became notable after its release on his 1993 album Facing Future.

"What a Wonderful World" is a song written by Bob Thiele and George David Weiss. It was first recorded by Louis Armstrong and released in 1967 as a single. In April 1968, it topped the pop chart in the United Kingdom, but performed poorly in the United States because Larry Newton, the president of ABC Records, disliked the song and refused to promote it.