I know a snatch of a song -

Sing us one of the old songs George
One of the songs we know
try old man, do what you can
and we'll make the chorus go
We won't forget how it used to be
in the days when life was new
sing us a song and if you go wrong
We'll help to pull you through.

Is there any more of it?

Is it the song from which the book takes its title?

It sounds music hall ish, so is it in the book?

Anne