“Re-rain” is a sound installation expressing non-visible elements such as gravity, magnetic force, and sound as physical elements. This installation is created with the sound of rain sampled in Japan early spring of 2016.The sound of raindrops hitting an umbrella are recorded, and is then played back from a speaker. The umbrella is set on top of a speaker, and the vibration of the speaker is transmitted through the umbrella to make a sound. For example, an umbrella cannot vibrate if the magnetic force of the speaker is small or if the rain hitting the umbrella is either too high or too low in pitch extent. For this reason, this is a device picking out a state in which the magnetic force of the speaker, weight of the umbrella, and pitch extent of sound are all in a balanced state. Natural phenomena such as rain travels through an object and is emitted as sound to the air..