The first thing that came to my mind was Beethoven's 6th, "Die Pastorale".Algot Runeman wrote:idyll
And secondly the scene in the 1973 movie "Soylent Green" when the character played by Edward G. Robinson lives his final moments enjoying footage of an idyllic Earth, long gone, while listening to very gripping music.
(Sadly, Edward G. Robinson died January 1973, about 3 months before that film was released.)

(This girl centaur is from Disney's Fantasia, not from Soylent Green)