A single-reed is a type of musical instrument mouthpiece that uses one thin piece of material, typically cane, to produce sound. This reed vibrates when air is blown across it, creating sound waves. Instruments that use single-reeds include the clarinet and the saxophone. Single-reeds are essential for the unique sound of these instruments. Musicians can adjust the pitch and tone by changing the reed's thickness or by using different types of reeds. Proper care and maintenance of the reed are important for achieving the best sound quality during performances.