The slide trombone developed as the “push-pull” in the 15th century.  The slide trombone was usually played in church.  It had a warm velvety sound.  The slide trombone also performed outside for celebrations.

 The slide trombone is different from the modern trombone in many ways.  One way is because it has a smaller bell.  It also has a different bore.  Because of these differences, the slide trombone is recognized as a sacred instrument.

 As time wore on, the “push-pull” became the trombone that has a bigger bell and bore.  Bach used trombones in many of his symphonies.  In 1750 when Bach died the “push-pull” began to lose its identity.  Classical songwriters like Mozart and Haydn used the slide trombone sparingly in their songs.  When they used them it was for deeply religious or supernatural parts.  But as the 19th century began the slide trombone became popular again.

 Many composers in the 19th century helped make the slide trombone become popular.  Hector Berloiz stated, “In my opinion, the slide trombone is the true head of the family of wood instruments, which I have named the ‘epic’ one.  It possesses nobility and grandeur to the highest degree; it has all the serious and powerful tones of sublime musical poetry from religious, calm and imposing accents to savage outbursts.  Directed by the will of the master, the trombones can chant like a choir of priests, threaten, utter gloomy sighs, a mournful lament or a bright hymn of glory; they can break forth into awe inspiring cries and awaken the dead or doom the living with their fearful voices.”