OK so I don't expect anyone to know the SONG, but the poem maybe. This was set by Aaron Copland in a series of songs. I was listening to them a few days ago, and Heath flashed in my head when this one started.
HEART, we will forget him!
You and I, to-night!
You may forget the warmth he gave,
I will forget the light.
When you have done, pray tell me,
That I my thoughts may dim;
Haste! lest while youre lagging,
I may remember him!
Emily Dickinson