Who sings hawaiian version of somewhere over the rainbow?
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Who sings the Hawaiian version of "Somewhere Over the Rainbow" released in 1990?
Israel Kamakawiwo'ole
Other artists have recorded the medley as well. Cliff Richard recorded his own version of the medley, released as a single from the 2001 album "Wanted", which peaked at number 11 on the UK Official Charts in 2001. 
Who sings a cover of the Hawaiian version of "Somewhere Over the Rainbow" in their 2001 album Wanted?
Cliff Richard
Somewhere Over the Rainbow/What a Wonderful World
Aselin Debison recorded the medley for her 2002 album "Sweet Is the Melody". Elisabeth von Trapp included her interpretation of the medley in her album "Poetic License", released in June 2004. 
Who sings a cover of the Hawaiian version of "Somewhere Over the Rainbow" in their 2002 album Sweet Is the Melody?
Aselin Debison
Somewhere Over the Rainbow/What a Wonderful World
Aselin Debison recorded the medley for her 2002 album "Sweet Is the Melody". Elisabeth von Trapp included her interpretation of the medley in her album "Poetic License", released in June 2004. 
Who sings a cover of the Hawaiian version of "Somewhere Over the Rainbow" in their 2004 album Poetic License?
Elisabeth von Trapp
Somewhere Over the Rainbow/What a Wonderful World
During season seven of "American Idol", Jason Castro performed a cover of the song for his "Top 8" performance. Maddie Poppe and Caleb Lee Hutchinson performed the song as a duet during the grand finale of season sixteen of American Idol.
Who sings a cover of the Hawaiian version of "Somewhere Over the Rainbow" in season seven of American idol?
Jason Castro
Somewhere Over the Rainbow/What a Wonderful World
During season seven of "American Idol", Jason Castro performed a cover of the song for his "Top 8" performance. Maddie Poppe and Caleb Lee Hutchinson performed the song as a duet during the grand finale of season sixteen of American Idol.
Who sings a cover of the Hawaiian version of "Somewhere Over the Rainbow" in season sixteen of American idol?
Maddie Poppe and Caleb Lee Hutchinson
Somewhere Over the Rainbow/What a Wonderful World
Somewhere Over the Rainbow/What a Wonderful World
https://en.wikipedia.org/wiki/Somewhere%20Over%20the%20Rainbow/What%20a%20Wonderful%20World
Israel Kamakawiwoʻole
https://en.wikipedia.org/wiki/Israel%20Kamakawiwo%CA%BBole
 I've found multiple people who have sung the hawaiian version of "somewhere over the rainbow" including the original singer Israel Kamakawiwo'ole. I found a cover of the song in Cliff Richard 2001 album "Wanted" and also in Aselin Debison 2002 album "Sweet is the Melody''and Elisabeth Von Trapp in her 2004 album "Poetic License." Jason Castro sang "Somewhere over the rainbow" in season 7 of American Idol and Maddie Poppe and Caleb Lee Hutchinson sang the song in season sixteen of American Idol. 