Updated. Paul McCartney after approximately 1966 surged to become the band’s most melodic songwriter. This cover by two young Irish ladies I think does justice to both the song and its original singer / songwriter.

Lyrics:

Looking back at white and black –
Reminders of my past –
Smoky bars and cheap guitars-
But nothing built to last-

Nothing ever stays-
Nothing comes to mind-
No one can erase-
The days we left behind-

See the boys of Dungeon Lane-
Along the Mersey shore-
Some of them will feel the pain-
But some were meant for more-

And nothing stays the same-
No one needs to cry-
Nothing can reclaim-
The days we left behind-

We met at Forthlin Road-
And wrote a secret code-
To never be spoken-
I stand by what I said-
The promise that I made-
Will never be broken-

Nothing ever stays
Nothing comes to mind
And no one can erase
The days we left behind

In the skies the skylarks rise
Above the sounds of war
Since that day I knew they’d stay
With me for evermore

’Cause nothing stays the same
And no one needs to cry
And no one is to blame
For the days we left behind

The days we left behind