A clarinet is a woodwind instrument. A clarinet has a simple, straight tube with intricate keys, a single-reed mouthpiece, and a flared, bell-shaped end.
When you play the clarinet, you blow through the mouthpiece and make notes with your fingers on the keys. Clarinets are distinctive because they are straight, with a black body and silver keys, and have a large pitch range. The word clarinet comes from the French clarinette, the diminutive form of clarine. "little bell," which comes from clair, "bright or clear."