“There’s a whole world underneath the stage. It’s called a ‘trap room,’ and at the Royal Alex, it’s a tight space for sound gear, change areas and a wig station. The musicians are in the orchestra pit, working to a “click track” rhythm and with in-ear monitors to keep in time with the actions on stage. The sound man and a mixing board are upstairs, at the back of the house, where the volume levels of the actors’ wireless microphones are manipulated constantly, on the fly.”