4-channel speakers and thirty LED devices with variable/controllable luminosity are installed in the library's ground floor area. The speakers shower the entire space with sound fragments of barely audible volume and frequency, filling the dark and serenely silent library during after-hours with a combination of distantly reverberating sound and faintly blinking lights. The visitor can enjoy this work from the connecting corridor on the first floor that overlooks the entire library, and focus his senses on the ensemble's concert framed by environmental sounds.