This piece was inspired by the sound of bottle blowing. I have always been fascinated by how many different sounds one can make simply by changing the water levels, the length of the air column that vibrate within it, or even just the position of the blower's mouth. And when two bottles are placed together, the sound waves clash. The rhythms are created when the electromagnetic valve sends signals from the computer through the Arduino to control the AC ( alternating current )switch. When the physically modeled sounds are in interplay with random sampling of digital signals, we are treated with a feast of sounds like never before.(Wang, Chung-Kun)