Which wind instrument is made of brass or metal with a cupped mouthpiece?

• A. Woodwind
• B. Brass
• C. Strings
• D. Percussion

Answer: (B)

Understanding how wind instruments are categorized by how they produce sound and by mouthpiece design helps explain this. Brass instruments are made from brass or metal and use a cupped mouthpiece. The player buzzes their lips against the mouthpiece to generate the vibrating air column, and the pitch is changed by lengthening the tube with valves or slides and by adjusting lip tension. This is why instruments like the trumpet, trombone, French horn, and tuba belong to the brass family. Woodwinds, by contrast, use a reed or an edge to set the air in motion, not buzzing lips into a cupped mouthpiece, and strings and percussion are different families entirely. So the described instrument is part of the brass family.