Brass instruments are Western wind instruments that produce sound through the vibration of the player’s lips against a cup-shaped mouthpiece. The pitch is controlled by altering lip tension and by changing the length of the air column using valves or slides. Although traditionally made of brass, the defining characteristic is the embouchure mechanism rather than the material. The brass family includes instruments such as the trumpet, trombone, French horn, euphonium, and tuba. Known for their powerful projection and brilliant tone, brass instruments are essential in orchestras, concert bands, military bands, and ceremonial music. Historically derived from natural horns and signaling instruments, modern brass instruments offer full chromatic capability and a wide expressive range. This collection gathers brass instruments within the Western musical framework.