The DF-I consists of 4 stepper motors, 4 piezopick-ups, 1 controller unit, and some resonating body. The name DF-I can be traced back to the abbreviation “DeFi”, which stands for defibrillator. Since a defibrillator can be used for resuscitation attempts, the DF-I can also be used for musical resuscitation attempts on almost every object. The stepper motors generate the sound. The surface of the object transmits the sounds to the pick-up.