This is a highly psychological oppressive suspense thriller (Suspense / Thriller) atmosphere of music. The work does not have traditional melody and harmony, but constructs the auditory space through cold electronic pulses (like a countdown), low-frequency roar (Drone) with great depth, and disturbing synthesizer noise. The whole music seems to place people in a confined space that cannot be escaped. With the layered addition of sound effects, the sense of suffocation in the face of unknown fear and danger approaching is vividly expressed. It is a perfect “psychological pressure” material.