Classic Poem

Merry knaves are we three-a. Molus:
When our songs do agree-a. Calypho:
O now I well see-a,
What anon we shall be-a. Criticus:
If we ply thus our singing, Molus:
Pots must then be flinging. Calypho:
If the drink be but stinging. Molus:
I shall forget the rules of grammar, Calypho:
And I the pit-apat of my hammer. Chorus:
To the tap-house then lets gang, and roar,
Call hard, 'tis rare to vamp a score,
Draw dry the tub, be it old or new,
And part not till the ground look blue.