The audio begins with the distinctive sound of knuckles rapping on a solid wooden door. The rhythm resonates through the indoor space, creating a sense of anticipation. The door remains closed, its wooden surface amplifying each knock. The sound echoes in the stillness, a clear, sharp contrast to the silence that precedes and follows each knock. The knocking sequence is not random, but rather it carries a rhythm, a beat, resembling a rap song in its cadence and tempo. It's an unusual yet captivating mixture of the organic quality of the wooden door and the rhythmic pattern of the knocking, creating a unique acoustic experience.