At mesm Tokyo, high-quality sound equipment from Yamaha Corporation, one of Japan's leading sound manufacturers, is implemented as part of the experiences to pleasantly fascinate the auditory sense among the five senses. The three-dimensional music, created by the harmony of a wide range of high and low tones, is not background music (BGM) that plays casually in the background of the space, but foreground music (FGM) that brings the music forward and leaves a lasting memory, allowing guests to indulge in a variety of music genres throughout the day. 

Along with the sound equipment, a vintage 1963 Yamaha piano by the renowned architect, Antonin Raymond, stands in the lobby. The original design, piano frame, and soundboard are preserved, while the strings and hammers were exchanged, resonating a distinct, high tone that, together with its beautiful looks, captivates the visitors.