“Metronome Piece” by Akitsugu Maebayashi. The artist walks around the town bringing along a clicking metronome. The regulated clicks produced by the metronome works as ‘sonor’ which detects information of spaces, and the echoes of clicks are recorded binaurally through microphones that are placed on both of ears of him. This is how, the sound of clicks becomes the medium which transmits experience as a mixture of space and time.