Every session needs a farewell song. Here's one of my favourites.:

All the tunes in the world
Ewan McVicar
Tune - The South Wind(ish)
Lay down the borrowed guitar
Lay down the fiddle and bow
You'd like one more drink from the bar
But the manager says you must go

CHORUS:
And all the tunes in the world
Are dancing around in your head
But the clock on the gantry says playtime is o'er
You'll just have to sing them instead

Lay down the jig and the reel
Lay down the planxty and slide
Everyone knows how you feel
But there's no time to take one more ride

The barmaid has put on her coat
And the barman has emptied the slops
The manager's pals are afraid
The music will bring in the cops

Everyone here feels the same
Oh yes, you deserve one more tune
But you know the rules of the game
It's time to go howl at the moon

Regards, John