According to the query of the Encyclopedia of Musical Instruments, brass instruments are rich in flavor and loud in sound, so brass instruments are suitable for expressing rough and loud musical images.

Brass instrument is a kind of instrument that blows air into the mouthpiece and causes lip vibration. There are two ways to change the pitch of key instruments: one is to press the key to change the length of the tube; Second, the airflow blown by the player changes the vibration frequency of the lips.