In the audio titled "Clicking of Knuckles", you can distinctly hear the sound of fingers being flexed, resulting in the snapping or popping of knuckles. The audio focuses on the rhythmic pattern of these sounds, creating a series of cracks that echo in a quiet background. It is an intimate representation of the mechanical movement of fingers, the flexing and bending that leads to the familiar, somewhat comforting sound of knuckles clicking. The audio captures the unique percussion of these sounds, offering an almost musical quality as each knuckle produces a slightly different pitch and tone.