Explanation:

Brass instruments are essentially very long pipes that widen at their ends into a bell-like shape. The pipes have been curved and twisted into different shapes to make them easier to hold and play.

1. Tuba- is the lowest-pitched musical instrument in the brass family. As with all brass instruments, the sound is produced by lip vibration – a buzz – into a mouthpiece.
2. Trumpet- a brass instrument commonly used in classical and jazz ensembles.
3. French horn- brass instrument made of tubing wrapped into a coil with a flared bell.
4. Cornet- is a brass instrument similar to the trumpet but distinguished from it by its conical bore, more compact shape, and mellower tone quality.