The audio unfolds with an echoing, rhythmic knock, almost melodic in its repetition. It's the distinctive sound of someone, or something, tapping on a window pane. The tone is light, yet persistent - a sound that could easily be mistaken for raindrops, but upon closer listening, it's unmistakably a knock. The knocking continues - a subtle, constant, almost comforting pattern against the window. The repetition creates an atmosphere of anticipation. Will the knocking persist? Will it stop? Is it a signal, a code, or simply a whimsical rhythm? The audio leaves you in a state of suspense, teetering on the edge of curiosity and intrigue.