Dynamic microphones are constructed with small magnets that oscillate inside a metal coil attached to the diaphragm. When a sound wave causes the diaphragm of the microphone to vibrate, the relative motion of the magnet and coil creates an electrical signal by magnetic induction. From this magical, fantastical process, we arrive at the auditory eargasm that is The Bald and the Beautiful. Need we say more? We need not.