You were sitting in the security office.. relaxed and calm... and that was because you taped the music box shut.. after the melody of the box stopped.. you heard banging from inside.. The Marionette animatronic was trying to get out.. she sounded pissed.. I'M GONNA GET YOU NIGHT GUARD! YOU LET THE MUSIC RUN OUT! SO LET ME OUT! SO I CAN KILL YOU! SO YOU CAN SUFFER! YOU CAN'T KEEP ME IN HERE FOREVER! Eventually.. she broke out of the box..