In a Pub people have the right to listen or not listen, as is there wish. If you can't stand the heat get out of the Kitchen. Maybe find yourself a nice cosy back room with a door you can shut against the masses and some 50 something lapsed socialists to stare and tut tut when someone is showing insufficient respect to the "Artists".
But wait a minute, its already been done; they're called Folk Clubs.

TTFN
PP