[vivfox]

Actually it's done with the lighting crew. Whenever they shine very bright light on the audience we screamed louder because then the band could see everyone in the room. In that part of SOTM it's real dark in the room and Stevie is singing and at the same moment she throws her arm up in the air to sing louder the bright light flashes a few times on the audience, again making us go more nuts, collectively thinking that all of a sudden she'll be able to see all of us wherever we are in the arena. But it's the lights that makes us respond louder, IMO. Also remember when those many white lights scanned over the crowd during another song on the Tusk doc? Again the audience goes nuts cause we want to be noticed.