Graham Nash's song "Lost Another One" from his 2002 album Songs For Survivors is partially about Harry Nilsson:

Just another morning cup of tea, I turn my radio on
And in between the static and the headlines
I heard that you were gone, we lost another one ....

"It started with the death of Roy Orbison," Nash explained. "And then in quick succession it was Harry Nilsson and John Candy and Michael Hedges and George Harrison and John Entwistle. I've just lost a lot of people."[1]

"Lost Another One" by Graham Nash