I believe one of the most fundamental interactions of people is our existence itself that everyone is born with. The pulse is an inherent signal demonstrating the proof of the existence. It becomes even more meaningful with variety. I want to express a beauty of collaboration between those existences, so I made a thing that only can be activated by two people. This small box plays a variety of music, which is a celebration of harmonized effort between the existences. According to a different combination of people, it plays different music with different bpm. The diversity comes right from us.