The instrument known for having keys and producing sound by blowing air is the clarinet. It belongs to the woodwind family and is characterized by a single-reed mouthpiece, which allows the player to produce sound by vibrating the reed. The clarinet features a cylindrical body with a series of keys that control the pitch and tone produced by the instrument. It has a wide range, capable of playing both deep bass notes and high, bright melodies. The clarinet is commonly used in orchestras, concert bands, and various music genres, including jazz and classical music, celebrated for its versatility and expressive sound.