Songs about passing of time, passing away

[Steady Stan]

Maybe it's obvious, but "Funeral for a Friend" By Elton John

"Afterimage" by Rush is powerful

"Old & Wise" is another tearjerker from The Alan Parsons Project

"Father OSA" by Styx is a sleeper that may fit the bill

"Long Goodbyes" from Camel, while a tad sappy, could be appropriate.

Like Keithie, my dear friend, I demand "Awaken" to be played at my life celebration.