The local coppers are probably going up the wall.

They must have better things to do than persecute beer drinking herberts for playing a few tunes.

Regarding weapons of mass distraction, may I recommend bhodrans & banjos in the front line, and when the 'Folk Police' make their entrance you should all start humming 'Keep The Home Fires Burning, White Cliffs of Dover, etc,' to a solitary harmonica accompaniment

(They can't do you for humming.)

Failing this, anything else by Vera Lynn would do.

Has the world gone completely mad?

The very best of luck to you....