In the audio titled "Second Recording", the prominent sound is the distinctive audio effect of tape being pulled. This effect generates a unique, slightly grating and drawn-out sound, almost akin to the rustling of paper or the tearing of fabric. It's an immediately identifiable sound, one that's often associated with manual labor or the preparation of some sort of project or task. The audio effect provides a sense of action and movement, creating a palpable atmosphere of anticipation and effort. The audio is characterized by these pulling and tugging sounds, contributing to its overall effect.