During the Sword in the Stone Ceremony, if you stand in front of Mr. Toad's wild ride, and look towards the turret with the evil queen in it (above the entrance to Snow White) sitting just outside of the turret to the left (closest to the castle), is the technician that runs the sound and controls the sword.

Merlin is supposed to stick to his script, so the tech knows what will happen next, but Merlin has been known to improvise and then the tech is not sure what is supposed to happen next.