The musical instrument played by blowing into it and using keys is the saxophone. Invented by Adolphe Sax in the 1840s, the saxophone is a woodwind instrument made of metal with a conical shape, producing a remarkable range of sounds. It typically features keys which allow the player to create various notes, and it is commonly used in genres such as jazz, rock, and classical music. Its unique sound, characterized by a warm, rich tone, makes it a favorite among musicians. The saxophone has significantly influenced modern music, contributing to the development of jazz and popular music.