A Rhodes piano is an electric keyboard instrument that produces sound using metal tines struck by hammers. When a key is pressed, the hammer hits a tine, which vibrates and creates sound. This vibration is then amplified electrically, giving the Rhodes piano its distinctive, warm, and slightly metallic tone. Developed in the 1960s, the Rhodes piano became popular in jazz, rock, and funk music due to its unique sound and versatility. It is known for its smooth, bell-like quality and was a staple in many iconic recordings.