Record players and other sound-producing devices rely on the principle of vibration to create sound.
In the case of record players, a diaphragm attached to a stylus or needle vibrates in response to sound waves, cutting those vibrations into a wax record.
When the record is played back, the needle follows the grooves, reproducing the original vibrations and creating sound.
Modern record players use speakers and a copper coil vibrating between magnets to convert the vibrations into electricity, which is then amplified to produce sound.
Other sound storage mediums, such as cassette tapes and CDs, use similar principles of magnetization and conversion of electrical signals to recreate sound.