Brass instruments are a family of musical instruments made primarily of brass or other metals. They produce sound when the player buzzes their lips into a mouthpiece, creating vibrations that resonate through the instrument's tubing. Common examples include the trumpet, trombone, and tuba. These instruments are often used in orchestras, bands, and various music genres. Brass instruments are known for their bright, powerful sound and can play a wide range of notes. They are categorized into two main types: valved instruments, which use valves to change pitch, and slide instruments, like the trombone, which use a slide mechanism.