Final answer:
Brass is a metallic alloy formed when copper is alloyed with zinc. It is widely used in musical instruments.
Step-by-step explanation:
Brass is a metallic alloy that is formed when copper is alloyed with zinc. It is widely used in musical instruments like trumpets and trombones due to its malleability and acoustic properties. Brass is an example of an alloy, which is a mixture composed of two or more elements, at least one of which is a metal.