Songs about getting old

I'm collecting songs about growing old for a theme cd. Searching my own mainly rock/pop collection I've found the following songs.

When I'm Sixty Four - Beatles
Old Friends - Simon and Garfunkle
Days That Used To Be - Neil Young
Enjoy Yourself - The Specials
When I was Young - Eric Burdon
O.G. Original Gangster - Ice-T
Knocking on Heaven's Door - Bob Dylan
Touch of Grey - Grateful Dead
End of the Line - Traveling Wilbury's

Not very much of a list, I'm afraid, but I'm sure the collective memory of the forumites can help. What songs do you know that deal with themes of growing old, facing mortality and debility, and looking back on youth?
Any genre welcome.

Thanks
Lee