Bardic Inspiration

It's the night of the performance that you've all been working so hard to pull off.  And you'll be damned if you let whatever the hell is happening all around you throw you off your game.  The show must go on, come hell or high water. 

In this one-shot game, a group of Actors will be performing scenes from actual plays while the GM throws complicating factors into the mix -- maybe the building has unscheduled maintenance taking place during the performance, or there's a tense police standoff taking place in the building.  Or zombies, or wizards, or sentient buildings.  

Will the actors be able to face their fears and pull off the greatest performances of their careers?  Or will the whole thing implode under its own weight?