This post takes me back to a lot of years.
I was playing in this band at this dance hall and I always wondered why the upright piano was on rollers until one night a riot broke out between a LOT of people. I just turned the piano a 1/4 turn and had a fort and all of us got down on the floor and hid behind the piano.
I also worked a club where the piano bar was in the corner and there was lots of room to hide underneath this grand piano. The only other problem in this club was the Boss's wife. I finally had to quit. It was a good gig too. It only paid union scale of $10.00 a night but the tips could be awesome when everyone had a great day at the horse race track, Santa Anita just down the street a ways.
Bebop