I don't know if any one song in all the history of music is as beautiful as "Forbidden Colours", the 1983 theme song for the film Merry Christmas, Mr. Lawrence. It was written and recorded by Riuichi Sakamoto of Yellow Magic Orchestra fame (music) and former Japan singer David Sylvian (lyrics) and is a song so hauntingly pretty that it's almost impossible to comprehend. This song is in many ways the best definition of the word "art" I can come up with. It encompasses every aspect of what it should be.
Watch and listen