Some more come to mind:
Danny Boy (traditional Irish)
The Winner Takes It All (ABBA)
I've Gotta Get a Message to You (Bee Gees)
You Don't Bring Me Flowers (Neil Diamon & Barbara Streisand)
Jack Flash Jr wrote:
Pump Up The Jam....
Because it heralded the rise of techno as primary subculture of that era.
Come to think of it, you've just convinced me that the saddest song of all time must surely be some or other song by Die Antwoord.