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.
Somewhere over the rainbow way up high. There's a land that I heard of once in a lullaby. Somewhere over the rainbow skies are blue. And the dreams that you dare to dream really do come true. Someday I'll wish upon a star. And wake up where the clouds are far. Behind me.