Oh god, I hope that isn't the version of "Green Hills" that I heard in the early 70s. <shudder>

Closest I've come to that is the tape I made to play at the start of my D&D sessions. Since it seemed that folks where always having to pick gear, choose spells and a zillion and one other things for the first 30-40 minutes, I figured a bit of "mood music" would be in order:

"Suicide is Painless" (recorded off the start of a video of the movie M*A*S*H, since that was the only source available to me that had the *words*)
"Lykewake Dirge" by Pentangle
Originally I had "Seasons in the Sun" by Terry Jacks as the third item, but it didn't feel right. So I taped over it with the "March of the Winkies" from "The Wizard of Oz" (that's the Wicked Witch's guards going "Yo-dee-oh, Yo-Oh!" etc).
The some stuff from the old Rankin-Bass antimed "Return of the King":
"Win the battle, lose the war...."
"Where there's a whip, there's a way"
"The bearer of the Ring..."
To make it not a complete downer, I finished off with the entire soundtrack of the Bugs Bunny cartoon "What's Opera, Doc?"

It was fun watching as the "theme" started to sink in. :-)