The timbre differences among French horn, trombone, tuba and trumpet.

Trumpet: Strong, bright and sharp, full of brilliance, it is a high-pitched instrument in the brass family. It can not only play loud trumpet sounds, but also play beautiful and singing melodies. Using silence in trumpet can increase mystery. Trumpet is an important instrument in military bands and is also widely used in jazz bands. Trumpets are loud and magnificent, and are mostly used to play horns and melodies. For example, in Verdi's Aida, the trumpets are played together with great momentum.

Extremely inflammatory. Known as the prince in the band.

Horn: The timbre is rich and changeable, and it has a sacred, inviolable and epic sound when playing solemn music. Playing beautiful and smooth tunes is like velvet, gentle and soft; When playing four kinds of harmonies that are common in bands, they are as pure and invisible as transparent glass columns. Horn can be rich in all kinds of sound changes, which cannot be replaced and imitated by other musical instruments. Known as the goddess in the band.

Trombone: Proud, brilliant, solemn, majestic and full tone, loud and powerful voice, gentle and euphemistic when playing weakly. Its timbre is distinct and unified, which can rarely be assimilated in the band, and can even compete with the whole band. Can play chromatic and unique sliding sound. Often play the bass part of gorgeous music. Military bands are the main instruments used to play powerful bass melodies. Known as the general in the band.

Tuba: It is the largest bass brass instrument in the orchestra, with a deep and dignified tone. Tuba is mainly used for bass harmony or rhythm in bands, and is rarely used for solos. Lack of a big band is like a tree without roots and water without sources. Tuba is not only rich in bass, but also beautiful in treble. In the band, it is called "Prime Minister".