When I was an elementary school student, I sometimes participated in disaster drills. The wail of siren to warn us of the occurrence of an earthquake or a fire sounds throughout the school, when we must escape from our classrooms into the playground. It is simulative, of course, and nothing disastrous happens.
I would often wonder why this must be imposed on us and feel a bit bored, but at the same time I thought our daily lives might be very fragile and could be broken to ashes in a moment. Based on such experiences, I asked myself what I could make in an imaginary music room in such a difficult situation as is still in ruins after everything around us stops working.