The term 'Hurdy-Gurdy' is a type of stringed instrument that has been around since the Middle Ages. It is also known as a wheel fiddle, and is played by turning a crank that rotates a wheel against the strings. The ORGAN is a keyboard instrument that produces sound by pressing keys that cause air to vibrate inside pipes. The lira is a stringed instrument from the Mediterranean region that is similar to a violin. The ROTA is a type of lute from the Renaissance period that is similar to a guitar. All three instruments are related to the Hurdy-Gurdy in terms of their construction and playing style.