The tenor saxophone is a member of the saxophone family, which was invented by Adolphe Sax in the 1840s. It is larger than the alto saxophone but smaller than the baritone saxophone, producing a rich, warm sound. The tenor saxophone is commonly used in various music genres, including jazz, rock, and classical. Typically made of brass, the tenor saxophone has a curved body and a single-reed mouthpiece. It is pitched in the key of B♭, meaning it sounds a whole step lower than written. The instrument features a range of about two and a half octaves, making it versatile for many musical styles.