You didn't ask, but I'll just add that an unconscious person in the end stage of a terminal disease will not experience any discomfort from the lack of food or water. Indeed, dehydration and hypoglycemia release natural endorphins that reduce sensations of pain or hunger.
The music to Somewhere over the Rainbow was written by Harold Arlen; the lyrics were written by Edgar Yipsel (Yip) Harburg. But Julie Garden sang it. Arlen and Harburg collaborated on all the songs featured in the movie, The Wizard of Oz. Over the Rainbow won Academy awards for them both.
The first Billboard pop singles chart was published in July 1940, so the original recording of 'Over the Rainbow' by Oz star Judy Garland couldn't chart. A vocal group from the Bronx, the Demensions, took the song to No. 16 on the Hot 100 in 1960, and singer Gary Tanner had a 1978 single that peaked at No. 69.