An embouchure is the way a musician shapes their mouth and lips to play a wind instrument, such as a trumpet or flute. It involves the positioning of the lips, tongue, and facial muscles to create a proper seal around the instrument's mouthpiece, allowing for effective sound production. The correct embouchure is crucial for achieving good tone quality and control over pitch. Different instruments require specific embouchure techniques, which can vary based on the player's style and the type of music being performed. Musicians often practice to develop a strong and flexible embouchure for optimal performance.