This music focuses on the movement and speed of sound. Erico cut out the sound pieces such as voice/words/noise from her daily life scene, then Yuki are finely placed and equalized them on technology. This expression is way similer to Futurism. For example, the essence of the photography is the connection between "past" and "reality" that "once-existed", Similarly, the mechanically recorded sound also connote its own past since the sound come into being. Today, we are surrounded by those daily sound at any moment and no longer feel it. Therefore, this music is certainly can be itself.