The audio begins with the sound of a metal lock mechanism whirring, creating an image of a heavy, metallic door. This is followed by a robotic voice uttering the title, "Only for those with permission". There's an air of secrecy and restriction, implying that the area beyond the door is forbidden to most. Then, there's a shift in the sonic atmosphere. The sound of a code being inputted can be heard, a series of electronic beeps that suggest a digital keypad. The rhythmic beeping creates an anticipatory atmosphere, as if something significant is about to happen. Suddenly, the metallic grinding of the lock disengaging echoes, indicating the door is opening. The sense of tension is palpable, the forbidden suddenly becoming accessible. This is followed by the soft, muffled sound of footsteps. They come closer, growing louder and more distinct, creating an impression of someone walking towards the now open door. The sound is produced in such a way that