This was the song that Fosworth Bearatheon and Kermit the Stark sang on the stage at the El Sleezo:

The Bear and the Froggy Fair

 A bear there was
A bear, a bear
With japes and jests
Beyond compare!
The bear!  The bear!
 
“Oh come,” they said
“To the village square!”
“The square,” Said he,
“How could I dare?”
“With japes like those
You’re the next Voltaire!”
(Voltaire!  Voltaire!)
 
The word went out
From here and there
(From here!  And there!)
You have to witness
This crazy bear
He tells his japes
with verve and flair-
(Such verve!   Such flair!)
 
Oh short and green
And sleek and fair
The frog who saw
and stopped to stare
(He stopped! To stare!)
So green so fair
And debonaire
A reg’lar little
Swamp Astaire
The Frog who saw and stopped to stare
(He stopped!  To stare!)
 
“I dance and sing
“A merry air
‘Pray sing with me “
Said the Frog so fair
(so green!  So fair!)
“I dance and sing a merry air,
But you and I
Make a killer pair
A Frog so green
And a funny bear”
A Frog!  A Bear!”
 
And all night long
Without fear or care
(No fear! No care!)
Though not the Sleezo’s
Standard bill of fare,
The Frog so green
And the funny Bear
They sang and capered
Something rare–
They made the finest sort of pair!
(A pair)
They made the finest sort of pair!