David requested to have everyone leave the scene except the cast and crew. LOL David didn’t want us to see them shoot the next scene. Someone in the crew told us that David did not want to do the scene originally. So some negotiations were done – they will let David have the scene he requested (my guess – inviting the fans to the concert scene) if he did the dream sequence. We all know David got what he wanted.
They shot the scene several times from different angles. And everytime the scene is cut, David would burst into laughter. Ha ha! It was as if he was caught doing something naughty LOL.