The accordion player's ears are still ringing from the heavy metal that had recently been blaring from the juke box.
Just before the juke box episode she heard someone with a british accent ask for two pints of lager and a packet of crisps. She motions to one of the patrons sitting near the stage, and whispers something in his ear. He goes off in search of the bartender.
And seeing that the thirsty looking customer has been taken care of, she begins playing "I'se Da Bye" for the nice man with the cod fish, who cuts a mean jig.