In this audio titled "Sound of a Pen", the prominent noise is that of a pen, presumably being used to write or draw. It is an ordinary sound, yet it carries the distinctive identity of a pen meeting paper, creating a rhythmic, light, and continuous scratching sound. Intermittently, a user's hand glides on a computer mouse, resulting in a lower, soft, shuffling noise that contrasts with the pen's sound. Occasionally, there is a soft, sharp click, as though a mouse button is being pressed or maybe the pen is being clicked open or closed. These sounds create an ambiance of someone engaged in a creative or administrative task, where the pen and mouse are tools of their trade.